A molecule of ammonia (NH3 ) has (a) only single bonds (b) only double bonds (c) only triple bonds (d) two double bonds and one single bond

Answer: (a) only single bonds

Nitrogen has three electrons in its outermost shell and hydrogen has 1. 3 hydrogen atoms combine with 1 nitrogen atom to make ammonia. These bonds are single bonds.

Single bond

When two atoms share one electron pair between each other, then they are said to be bonded by single covalent bond, denoted by single dash joining the atoms.

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