Question

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

NCERT Class X
Science - Exemplar Problems

Chapter_Carbon and its Compounds

Answer 1

Thanks for asking the question.
A molecule of ammonia contains only single bonds so the answer is option A.
The nitrogen in ammonia contains five electrons. It uses three of its electrons to form a single covalent bond with each of the three hydrogens. The two electrons left are present as lone pair on nitrogen. The hybridization in NH3 is thus sp3.
Hope it helps.

Answer 2

A molecules of ammonia (NH3) has
only singal bond