Which formulas represent one ionic compound and one molecular compound

This simplifies to its correct empirical formula PbO2. The empirical formula has one Pb 4+ ion and two O 2− ions. Example 6.8.2: Predicting the Formula of an Ionic Compound. The gemstone sapphire (Figure 6.8.2) is mostly a compound of aluminum and oxygen that contains aluminum cations, Al 3+, and oxygen anions, O 2−.

Recall that a molecular formula shows the number of atoms of each element that a molecule contains. A molecule of water contains two hydrogen atoms and one oxygen atom, so its formula is \(\ce{H_2O}\). A molecule of octane, which is a component of gasoline, contains 8 atoms of carbon and 18 atoms of hydrogen.Figure 4.3. Formation of ionic sodium chloride from neutral Na and Cl atoms. Sodium chloride is a very stable compound because of the mutual attraction of oppositely charged ions. But the ions have to be arranged in an optimum manner for this attraction to be effective. Since oppositely charged ions attract each other, but ions with the same ...A binary ionic compound is a compound composed of a monatomic metal cation and a monatomic nonmetal anion. The metal part of the compound is named as the element. The nonmetallic part of the compound is named by dropping the end of the element and adding -ide. For binary compounds, it is not necessary to indicate the number of ions in the …E. ionic compounds have high boiling points. F. in an ionic crystal, ions having like charges are arranged close to each other. G. when an ionic compound dissolves in water, the solution conducts electricity. H. an ionic solid like sodium chloride consists of discrete pairs of sodium cations and chloride anions. A.Sodium chloride is an ionic compound composed of sodium cations, Na+ Na +, and chloride anions, Cl− Cl −, combined in a 1:1 ratio. The formula mass for this compound is computed as 58.44 amu (see Figure 5.5.3 ). Figure 5.5.3. Table salt, NaCl, contains an array of sodium and chloride ions combined in a 1:1 ratio. Its formula mass is 58.44 amu.Figure 2.3. 4: (a) The white compound titanium (IV) oxide provides effective protection from the sun. (b) A crystal of titanium (IV) oxide, TiO 2, contains titanium and oxygen in a ratio of 1 to 2. The titanium atoms are gray and the oxygen atoms are red. (credit a: modification of work by “osseous”/Flickr).Study with Quizlet and memorize flashcards containing terms like Water has a higher melting point than hydrogen fluoride. What is the main reason for this?, The main attractive force between polar molecules,in general, is, Which formulas represent one ionic compound and one molecular compound? and more.

Give the symbol and name for the ion with 34 protons and 36 electrons. Answer. Example 2.4.2 2.4. 2: Formation of Ions. Magnesium and nitrogen react to form an ionic compound. Predict which forms an anion, which forms a cation, and the charges of each ion. Write the symbol for each ion and name them.The following ionic compounds are found in common household products. Write the formulas for each compound: (a) potassium phosphate (b) copper(II) sulfate (c) calcium chloride (d) titanium dioxide (e) ammonium nitrate (f) sodium bisulfate (the common name for sodium hydrogen sulfate) Answer a. K 3 PO 4. Answer b. CuSO 4. Answer c. …... molecule with one carbon, four hydrogens, and one oxygen. Superscripts are used to specify the charge of an ion. Al3+ is interpreted as being a single ...Keep in mind, however, that the formula for an ionic compound does not represent the composition of a discrete molecule, so it may not correctly be referred to as the “molecular mass.” ... 10 23 molecules or formula units—1.00 mol of the compound or element. Clock-wise from the upper left: 130.2 g of C 8 H 17 OH (1-octanol, ...For example, the ionic compound sodium oxalate is comprised of Na + and C 2 O 4 2− C 2 O 4 2− ions combined in a 2:1 ratio, and its formula is written as Na 2 C 2 O 4. The subscripts in this formula are not the smallest-possible whole numbers, as each can be divided by 2 to yield the empirical formula, NaCO 2 .The formula of an ionic compound can be predicted by using the formulae of its ions. The numbers of ions in a formula must give an equal number of positive and negative charges. Name of compoundOne important aspect about ionic compounds that differs from molecular compounds has to do with dissolution in a liquid, such as water. When molecular compounds, such as sugar, dissolve in water, the individual molecules drift apart from each other. When ionic compounds dissolve, the ions physically separate from each other. We can use a ...

Hydrogen and chlorine combine by sharing one electron to make the compound HCl. Similarly, oxygen, nitrogen, and carbon make 2, 3, and 4 covalent bonds with hydrogen to complete their octet and make compounds H 2 O, NH 3, and CH 4, respectively, as illustrated in Fig. 3.1.1. Figure 3.1.1 3.1. 1: Examples of covalent bonds where Cl, O, N, and C ...The compound interest with contributions formula is similar to the one used to calculate the future value of annuities. It factors in your regular contributions, compounding frequency and time during which the compounding takes place. It he...One mole represents 6.022х10²³ particles. The particles can be atoms in elements, molecules in molecular compounds, or ions in ionic compounds. Avogadro's ...a. molecular element b. molecular compound c. atomic element d. ionic compound; Write the molecular formula for a compound with the possible elements C, H, N & O that exhibits a molecular ion at M^+ = 72.0573. Write the molecular formula for a compound with the possible elements C, H, N and O that exhibits a molecular ion at M + = 91.043.We could write the chemical formula for this ionic compound as \(\ce{MgClCl}\), but the convention is to use a numerical subscript when there is more …

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Figure 3.2.4 3.2. 4: (a) The white compound titanium dioxide provides effective protection from the sun. (b) A crystal of titanium dioxide, TiO 2, contains titanium and oxygen in a ratio of 1 to 2. The titanium atoms are gray and the oxygen atoms are red. (credit a: modification of work by “osseous”/Flickr).Molecular chemical formulas indicate the number of atoms of each element contained in a single molecule of the compound. Ionic chemical formulas represent one formula unit of the ionic compound, indicating the simplest ration of the compounds cations and negative ions.Solution. To calculate the percent composition, the masses of C, H, and O in a known mass of C 9 H 8 O 4 are needed. It is convenient to consider 1 mol of C 9 H 8 O 4 and use its molar mass (180.159 g/mole, determined from the chemical formula) to calculate the percentages of each of its elements: % C = 9 mol C × molar mass C molar mass C 9 H ...Compounding lets you earn interest on interest. It's equal to P[(1+ r/n)^nt - 1] where P is principal, r = annual rate, n = number of compounding periods and t = the number of years for an investment or loan. Compounding accelerates the gro...Answers. 1. The symbol for the element oxygen, O, represents both the element and one atom of oxygen. A molecule of oxygen, O 2, contains two oxygen atoms; the subscript 2 in the formula must be used to distinguish the diatomic molecule from two single oxygen atoms. 2.

This would be defined as an Ionic Compound. For example Sodium (Na) forms a +1 ion and Sulfur (S) forms a -2 ion. If they got together to form a molecule, there would have to be 2 sodium ions for every 1 sulfur ion to make a neutral molecule. This molecule would be written symbolically as Na 2 S and called Sodium Sulfide. The math for this ...Naming Binary Molecular Compounds. Recall that a molecular formula shows the number of atoms of each element that a molecule contains. A molecule of water contains two hydrogen atoms and one oxygen atom, so its formula is \(\ce{H_2O}\). A molecule of octane, which is a component of gasoline, contains 8 atoms of carbon and 18 atoms of hydrogen.View the full answer. Transcribed image text: 1 View the first formula in Data Table 1. a Determine if the compound is molecular or ionic and record in Data Table 1. b If the compound is molecular, record the name of the first element with the correct prefix, followed by the prefix for the second element. Then add -ide to the root of the second ...Binary Ionic Compound: has two constituents, each of which is comprised of atoms from a single element. Monatomic: atoms of only one element ; Polyatomic Ionic Compound: each constituent contains atoms from more than one element. Can stand alone as polyatomic cation and anion. Acts as a single, charged unit; Can combine to form …The second element, chlor ine, becomes chlor ide, and we attach the correct numerical prefix (“tetra-”) to indicate that the molecule contains four chlorine atoms. Putting these pieces together gives the name carbon tetrachloride for this compound. Example 4.2.2 4.2. 2. Write the molecular formula for each compound.A chemistperformsthe sametests ontwo homogeneouswhite crystallinesolids,A andB. The results are showninthe tablebelow. MeltingPoint SolubilityinH20 (gramsper 100.0gH20atOOC) ElectricalConductivity (inaqueoussolution) SolidA High,801cc 35.7 Goodconductor SolidB Low,decomposes at1860C 3.2 Nonconductor …Multiple Choice. Please save your changes before editing any questions. 5 minutes. 1 pt. Na+ represents a ... An Ionic Compound is usually formed from which type ...P 4 is a substance that is made up of four atoms of the same element, so it is a molecular element. The formula for oxygen gas is O 2 so it is a molecular element. Exercise 5.4.1 5.4. 1. Provide the classification (i.e. atomic element, molecular element, molecular compound, or ionic compound) of each substance. I 2.For example, the formula for aluminum oxide, Al 2 O 3, indicates that this ionic compound contains two aluminum cations, Al 3+, for every three oxide anions, O 2− [thus, (2 × +3) + (3 × –2) = 0]. It is important to note, however, that the formula for an ionic compound does not represent the physical arrangement of its ions. It is ...

Ionic Compounds. To name an inorganic compound, we need to consider the answers to several questions. First, is the compound ionic or molecular? If the …

Therefore, the proper formula for this ionic compound is MgO MgO. Now consider the ionic compound formed by magnesium and chlorine. A magnesium ion has a 2+ charge, while a chlorine ion has a 1− charge: Mg2+Cl− Mg 2 + Cl −. Combining one ion of each does not completely balance the positive and negative charges.3.4: Identifying Molecular and Ionic Compounds. The tendency for two or more elements to combine and form a molecule that is stabilized by covalent bonds (a molecular compound) can be predicted simply by the location of the various elements on the periodic table. In Chapter 1, we divided the elements in the periodic table into …AboutTranscript. To find the formula of an ionic compound, first identify the cation and write down its symbol and charge. Then, identify the anion and write down its symbol and …Which formulas represent one ionic compound and one molecular compound? l. 2. 3. 4. and and and N204 NaOH and Bas04 . 15. Given the formula for hydrazine: ) De CAGR and the related growth rate formula are important concepts for investors and business owners. In this article, we'll discuss all you need to know about CAGR. Let's get started! The Compound Annual Growth Rate (CAGR) and the related gro...Carbon (group 14) is a nonmetal, hydrogen (group 1) is a nonmetal, and chlorine (group 17) is a nonmetal; CHCl 3 is predicted to be molecular. Lithium (group 1) is a metal, and carbonate is a polyatomic ion; Li 2 CO 3 is predicted to be ionic. Exercise 2.9.5 2.9. 5. Using the periodic table, predict whether the following compounds are ionic or ...We could write the chemical formula for this ionic compound as \(\ce{MgClCl}\), but the convention is to use a numerical subscript when there is more …What is the gram-formula mass of Ca(OH)₂? 1. ... Which formulas represent one ionic compound and one molecular compound? 1. ... This red color is produced when electrons in excited lithium atoms 1. are lost by the atoms 2. are gained by the atoms 3. return to lower energy states within the atoms 4. move to higher energy states within the …

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For example, the formula for aluminum oxide, Al 2 O 3, indicates that this ionic compound contains two aluminum cations, Al 3+, for every three oxide anions, O 2− [thus, (2 × +3) + (3 × –2) = 0]. It is important to note, however, that the formula for an ionic compound does not represent the physical arrangement of its ions. It is ...AboutTranscript. To find the formula of an ionic compound, first identify the cation and write down its symbol and charge. Then, identify the anion and write down its symbol and charge. Finally, combine the two ions to form an electrically neutral compound. In this video, we'll walk through this process for the ionic compound calcium bromide.(b) A sodium cation (Na+) has lost an electron, so it has one more proton (11) than electrons (10), giving it an overall positive charge, signified by a superscripted plus sign. You can use the periodic table to predict whether an atom will form an anion or a cation, and you can often predict the charge of the resulting ion.Answers. 1. The symbol for the element oxygen, O, represents both the element and one atom of oxygen. A molecule of oxygen, O 2, contains two oxygen atoms; the subscript 2 in the formula must be used to distinguish the diatomic molecule from two single oxygen atoms. 2.You may need to use more than one type of atom “atom” to illustrate a balanced chemical formula. Record the compound name, formula, number of each element and ...2023. 6. 27. ... Which of the following diagrams most likely represents an ionic compound, and which represents a molecular one? Explain your choice. 154. Has ...... molecule with one carbon, four hydrogens, and one oxygen. Superscripts are used to specify the charge of an ion. Al3+ is interpreted as being a single ...Solution. Because the ionic compound must be electrically neutral, it must have the same number of positive and negative charges. Two aluminum ions, each with a charge of 3+, would give us six positive charges, and three oxide ions, each with a charge of 2−, would give us six negative charges. The formula would be Al 2 O 3.Sodium chloride is an ionic compound composed of sodium cations, Na +, and chloride anions, Cl −, combined in a 1:1 ratio. The formula mass for this compound is computed as 58.44 amu (Figure 3.6.3 ). Figure 3.6.3: Table salt, NaCl, contains an array of sodium and chloride ions combined in a 1:1 ratio. Its formula mass is 58.44 amu.Example \(\PageIndex{1}\) Write the molecular formula of each compound. The phosphorus-sulfur compound that is responsible for the ignition of so-called strike anywhere matches has 4 phosphorus atoms and 3 sulfur atoms per molecule. Ethyl alcohol, the alcohol of alcoholic beverages, has 1 oxygen atom, 2 carbon atoms, and 6 hydrogen …(a) What are ionic compounds and covalent compounds? Give the name and formula of one ionic compound and one covalent compound. ​(b) Write the major points ... ….

Water, which is a chemical compound of hydrogen and oxygen in the ratio two hydrogen atoms for every oxygen atom, contains H 2 O molecules. Sodium chloride is a chemical compound formed from sodium (Na) and chlorine (Cl) in a 1:1 ratio. Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. …Verified answer. environmental science. Which of the following statements about the carbon cycle is true? (a) Carbon transfer from photosynthesis is in steady state with respiration and death. (b) The majority of dead biomass is accumulated in sedimentation. (c) Combustion of carbon is equivalent in mass to sedimentation.Leave out all charges and all subscripts that are 1. AlN AlN. Li2O Li 2 O. An alternative way to writing a correct formula for an ionic compound is to use the crisscross method. In this method, the numerical value of each of the ion charges is crossed over to become the subscript of the other ion.Figure 2.1.3 2.1. 3 The Three-Dimensional Structures of Water, Ammonia, and Methane. (a) Water is a V-shaped molecule, in which all three atoms lie in a plane. (b) In contrast, ammonia has a pyramidal structure, in which the three hydrogen atoms form the base of the pyramid and the nitrogen atom is at the vertex.ionic compounds with three or more elements include_. some type of polyatomic ion. molecular compounds are held by_. covalent bonds. Because nonmetals have high_, valence electrons are shared by_. -ionization energies. -nonmetal atoms to achieve stability. molecule. -when two or more atoms share electrons.A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements. Water is composed of hydrogen and oxygen in a 2:1 ratio. The chemical formula for water is \(\ce{H_2O}\). Sulfuric acid is one of the most widely produced chemicals in the United States and is composed of the elements hydrogen, sulfur, and oxygen.The formula for lithium bromide is LiBr LiBr. When an ionic compound is formed from magnesium and oxygen, the magnesium ion has a 2+ charge, and the oxygen atom has a 2− charge. Although both of these ions have higher charges than the ions in lithium bromide, they still balance each other in a one-to-one ratio.A molecular formula is a chemical formula of a molecular compound that shows the kinds and numbers of atoms present in a molecule of the compound. Ammonia is a compound of nitrogen and hydrogen as shown below: Figure 5.3.1 5.3. 1: The molecular formula for ammonia. NH3.Which formulas represent one ionic compound and one molecular compound. BaCI2 and N2O2. Which statement explains why the molecule is nonpolar. The distribution of charge in the molecule is symmetrical. Which substance has nonpolar covalent bonds. CI2. Given the equation representing a reaction Which formulas represent one ionic compound and one molecular compound, Ionic compounds form when positive and negative ions share electrons and form an ionic bond.The strong attraction between positive and negative ions often produce crystalline solids that have high melting points. Ionic bonds form instead of covalent bonds when there is a large difference in electronegativity between the ions. The positive ion, called a cation, is listed first in an ionic ..., By the end of this section, you will be able to: Define ionic and molecular (covalent) compounds Predict the type of compound formed from elements based on their location within the periodic table Determine formulas for simple ionic compounds , Therefore, the proper formula for this ionic compound is MgO MgO. Now consider the ionic compound formed by magnesium and chlorine. A magnesium ion has a 2+ charge, while a chlorine ion has a 1− charge: Mg2+Cl− Mg 2 + Cl −. Combining one ion of each does not completely balance the positive and negative charges., The waves represent photons hitting the crystal structure of a metallic substance with enough energy that the negatively charged electrons are then emitted. ... Review the molecular formulas of A and B. A. FeS B. Zn ... An ionic compound has a rigid crystal structure with positive and negative ions fixed in place based on attractive forces., A substance formed by the chemical union of two or more elements close element A substance made of one type of atom only. is called a compound close compound A substance formed by the chemical ..., Ammonia is a compound of nitrogen and hydrogen as shown below: Figure 5.3.1 5.3. 1: The molecular formula for ammonia. NH3. There is one atom of nitrogen and 3 atoms of hydrogen in a molecule of ammonia. Note from the example that there are some standard rules to follow in writing molecular formulas., Compounds can be represented by their chemical formula. A chemical formula is ... Every ion in an ionic compound is attracted to ions of an opposite charge that., 2017. 9. 29. ... For an ionic compound, the smallest representative unit is a formula unit. Comparing Molecular and. Ionic Compounds. Copyright © Pearson ..., Ionic and molecular compounds are named using somewhat-different methods. Binary ionic compounds typically consist of a metal and a nonmetal. The name of the metal is written first, followed by the name of the nonmetal with its ending changed to – ide. For example, K 2 O is called potassium oxide., For example, the formula for aluminum oxide, Al 2 O 3, indicates that this ionic compound contains two aluminum cations, Al 3+, for every three oxide anions, O 2− [thus, (2 × × +3) + (3 × × –2) = 0]. It is important to note, however, that the formula for an ionic compound does not represent the physical arrangement of its ions. It is ..., This formula indicates that a molecule of acetic acid ( Figure 2.21) contains two carbon atoms, four hydrogen atoms, and two oxygen atoms. The ratio of atoms is 2:4:2. Dividing by the lowest common denominator (2) gives the simplest, whole-number ratio of atoms, 1:2:1, so the empirical formula is CH 2 O. Note that a molecular formula is always ..., One example of an ionic compound is sodium chloride (NaCl), where sodium (Na) is a metal that forms a positively charged ion and chlorine (Cl) is a nonmetal that forms a negatively charged ion. The formula for a molecular compound is represented by carbon dioxide (CO2), where carbon (C) and oxygen (O) atoms share electrons to form covalent bonds., Keep in mind, however, that the formula for an ionic compound does not represent the composition of a discrete molecule, so it may not correctly be referred to as the “molecular mass.” ... 10 23 molecules or formula units—1.00 mol of the compound or element. Clock-wise from the upper left: 130.2 g of C 8 H 17 OH (1-octanol, ..., One important aspect about ionic compounds that differs from molecular compounds has to do with dissolving in a liquid, such as water. When molecular compounds, such as sugar, dissolve in water, the individual molecules drift apart from each other. When ionic compounds dissolve, the ions physically separate from each other. We can use a ..., Molecular compounds are inorganic compounds that take the form of discrete molecules. Examples include such familiar substances as water (H2O) ( H 2 O) and carbon dioxide (CO2) ( CO 2). These compounds are very different from ionic compounds like sodium chloride (NaCl) ( NaCl). Ionic compounds are formed when …, 3.4: Identifying Molecular and Ionic Compounds. The tendency for two or more elements to combine and form a molecule that is stabilized by covalent bonds (a molecular compound) can be predicted simply by the location of the various elements on the periodic table. In Chapter 1, we divided the elements in the periodic table into …, Table 4.1 Comparison of Ionic and Covalent Compounds. 4.5 Naming Binary Molecular Compounds. Recall that a molecular formula shows the number of atoms of each element that a molecule contains. A molecule of water contains two hydrogen atoms and one oxygen atom, so its formula is H 2 O. A molecule of octane, which is a component of gasoline ..., Get the detailed answer: Which formulas represent one ionic compound and one molecular compound? (1) N2 and SO2 (2) Cl2 and H2S (3) BaCl2 and N2O4 (4) NaOH ... Which formulas represent one ionic compound and one molecular compound? (1) N2 and SO2 (2) Cl2 and H2S (3) BaCl2 and N2O4(4) NaOH and BaSO4. Answer +20. Watch. 1. answer. 1. watching. 367., We will focus on naming binary molecular compounds and simple ionic compounds. A ... To determine the chemical formula of an ionic compound, we can begin by ..., the highest percent is the compound that has the smallest formula mass : 37 Given the formula for hydrazine: How many pairs of electrons are shared between the two nitrogen atoms? (1) 1 (3) 3 (2) 2 (4) 4 . 1 : 1 bond is 2 electrons . or 1 PAIR of electrons: 38 Which formulas represent one ionic compound and one molecular compound?, chem review. Which formula represent one iconic compound and one molecular? a) N-subscript 2 and SO-subscript 2. B) NaOH and BaSO-subscript 4. c) BaCl- subscript 2 and N-subscript 2 O-subscript 4. d) Cl-subscript 2 and H-subscript 2 S. Click the card to flip 👆. c) BaCl- subscript 2 and N-subscript 2 O-subscript 4. Click the card to flip 👆., Which formulas represent one ionic compound and one molecular compound. BaCI2 and N2O2. Which statement explains why the molecule is nonpolar. The distribution of charge in the molecule is symmetrical. Which substance has nonpolar covalent bonds. CI2. Given the equation representing a reaction, Provided below is a list of the chemical formulas of some common chemical compounds (along with their molecular weights). Compound name. Molecular weight. Molecular formula. 1. Acetic acid. 60.052 g/mol. CH 3 COOH., This simplifies to its correct empirical formula PbO2. The empirical formula has one Pb 4+ ion and two O 2− ions. Example 6.8.2: Predicting the Formula of an Ionic Compound. The gemstone sapphire (Figure 6.8.2) is mostly a compound of aluminum and oxygen that contains aluminum cations, Al 3+, and oxygen anions, O 2−., Which formulas represent one ionic compound and one molecular compound. BaCI2 and N2O2. Which statement explains why the molecule is nonpolar., Compounds that contain ions are called ionic compounds. Ionic compounds generally form from metals and nonmetals. Compounds that do not contain ions, but instead consist of atoms bonded tightly together in molecules (uncharged groups of atoms that behave as a single unit), are called covalent compounds., Hydrogen and chlorine combine by sharing one electron to make the compound HCl. Similarly, oxygen, nitrogen, and carbon make 2, 3, and 4 covalent bonds with hydrogen to complete their octet and make compounds H 2 O, NH 3, and CH 4, respectively, as illustrated in Fig. 3.1.1. Figure 3.1.1 3.1. 1: Examples of covalent bonds where Cl, O, N, and C ..., Water, which is a chemical compound of hydrogen and oxygen in the ratio two hydrogen atoms for every oxygen atom, contains H 2 O molecules. Sodium chloride is a chemical compound formed from sodium (Na) and chlorine (Cl) in a 1:1 ratio. Although the formula for sodium chloride is NaCl, the compound does not contain actual NaCl molecules. …, 3.6: Molecular Compounds- Formulas and Names is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts. Molecular compounds can form compounds with different ratios of their elements, so prefixes are used to specify the numbers of atoms of each element in a molecule of the compound. …, Hydrogen is an exception to the octet rule. H forms only one bond because it needs only two electrons.Chapter 4 - Covalent Bonds and Molecular Compounds., a. ionic, because the valence electrons are shared between atoms. b. ionic, because the valence electrons are mobile. c. metallic, because the valence electrons are stationary. d. metallic, because the valence electrons are mobile. a. Which type of substance can conduct electricity in the liquid phase but NOT in the solid phase. a. ionic compound. , Avogadro’s number (NA): experimentally determined value of the number of entities comprising 1 mole of substance, equal to 6.022×1023mol−1 6.022 × 10 23 mol − 1. formula mass: sum of the average masses for all atoms represented in a chemical formula; for covalent compounds, this is also the molecular mass., For example, the ionic formula for calcium chloride is CaCl 2. Since calcium chloride is an ionic compound, this formula does not mean that there are actually two chlorine atoms floating around attached to one calcium atom. Ionic compounds are actually continuous, lacking the discrete units that make up a sample of a molecular substance.