Question

1. consider the following four compounds. which ones are ionic compounds? i. ch₄ ii. nacl iii. caco₃ iv. c₆h₁₂o₆ a. i and iv b. i, ii, iii, and iv c. i, ii and iii d. i and ii e. ii and iii

Explanation:

Ionic compounds form from metal - nonmetal (or polyatomic ion) interactions. \( \text{NaCl} \) has \( \text{Na}^+ \) and \( \text{Cl}^- \), \( \text{CaCO}_3 \) has \( \text{Ca}^{2+} \) and \( \text{CO}_3^{2 - } \). \( \text{CH}_4 \) and \( \text{C}_6\text{H}_{12}\text{O}_6 \) are covalent (organic, non - metal bonding). So II (\( \text{NaCl} \)) and III (\( \text{CaCO}_3 \)) are ionic.

Answer:

E. II and III