Question

A molecule of ammonia (${\mathrm{NH}}_3$) has:

• A. only single bonds
• B. only double bonds
• C. only triple bonds
• D. two double bonds and one single bond

Answer 1

The correct option is A

only single bonds

Explanation for the correct option:

Option A: only single bonds

• One molecule of ammonia contains one nitrogen atom and three hydrogen atoms.
• Nitrogen has 5 valence electrons and each hydrogen has one valence electron.
• Nitrogen shares one electron with each hydrogen, hence it forms a single bond with each hydrogen.
• Therefore a molecule of ammonia contains single bonds only.
• The structure of ammonia is:

• Hence this option is correct.

Hence option A: only single bonds is the correct answer.