# Chapter 2 - Atoms, Molecules, and Ions - Worked Example - Page 60: 17

(a) Ionic. (b) Molecular. (c) Molecular. (d) Ionic.

#### Work Step by Step

- Classify the elements in the compounds as metals or nonmetals. ** Metal + nonmetal = Ionic compound ** Nonmetal + Nonmetal = Molecular compound. (a) $Li$: Metal; $Br$: Nonmetal. Therefore, they make an ionic compound. (b) $Si$: Nonmetal; $Cl$: Nonmetal. Therefore, they make a molecular compound. (c) $B$: Nonmetal; $F$: Nonmetal. Therefore, they make a molecular compound. (d) $Ca$: Metal. $O$: Nonmetal. Therefore, they make an ionic compound.

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