Question

1. determine if the following compounds are ionic (i) or covalent (c).

a) cacl₂
b. nai
c. co₂
d. nh₃

Explanation:

Step1: Define ionic/covalent bonds

Ionic bonds form between metals and nonmetals; covalent bonds form between nonmetals.

Step2: Analyze CaCl₂

Ca (metal) + Cl (nonmetal) → ionic.

Step3: Analyze NaI

Na (metal) + I (nonmetal) → ionic.

Step4: Analyze CO₂

C (nonmetal) + O (nonmetal) → covalent.

Step5: Analyze NH₃

N (nonmetal) + H (nonmetal) → covalent.

Answer:

a) CaCl₂: I (Ionic)
b) NaI: I (Ionic)
c) CO₂: C (Covalent)
d) NH₃: C (Covalent)