Chapter 9, Problem 6STP

Interpretation Introduction

Interpretation: The formula of ammonium carbonate has to be stated.

Concept Introduction: During the naming of an ionic compound, the elemental name of the metal is written followed by the name of the non-metal with the suffix ‘-ide’.

Answer to Problem 6STP

The correct option is (B).

Explanation of Solution

Ammonium carbonate consists of ammonium ions ${\left({\text{NH}}_{\text{4}}\right)}^{\text{+}}$ and carbonate ions ${\left({\text{CO}}_{\text{3}}\right)}^{2-}$ . By the criss-cross method, the formula is ${\left({\text{NH}}_{\text{4}}\right)}_{\text{2}}{\text{CO}}_{\text{3}}$ .

Hence, the correct option is (B).

Conclusion

In option (A), the charge is not balanced. For options (C) and (D), the formulas for ions are wrong and the charge is not balanced.

Hence, the incorrect options are (A), (C), and (D).