Chapter 9, Problem 5STP

Interpretation Introduction

Interpretation: The statements which do not describe binary compounds have to be identified.

Concept Introduction: Binary compounds are those chemical compounds that are composed of only two elements. ${\text{H}}_{\text{2}}\text{O,}{\text{CO}}_{\text{2}}\text{,}\text{HCl,}\text{NaCl,}\text{etc}\text{.}$ are examples.

Answer to Problem 5STP

The correct options are (B) and (D).

Explanation of Solution

Every binary compound need not contain prefixes in their names. Similarly, any compound in which two types of elements are combined are binary compound, it can be either two metals, two non-metals, or a metal and a non-metal.

Hence, the correct options are (B) and (D).

Conclusion

The molecules of binary compounds are composed of two atoms and the names of binary molecules end in the suffix -ide.

For example, HCl is a binary compound as it is composed of ${\text{H}}^{+}$ and ${\text{Cl}}^{-}$ . The name is hydrogen chloride.

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