Question

A) Explain the formation of ammonia molecule.

Answer 1

Ammonia is formed from 3 atoms of Hydrogen and 1 atom of Nitrogen.

Nitrogen has 5 Valence Electrons ( 2,5 )  in its outer shell, so the valence electrons of 3 hydrogen atoms gets shared and it forms Ammonia through Co-valent bonding.

Answer 2

Ammonia (NH3) is made up of one atom of nitrogen and three atoms of hydrogen

Atomic number of N = 7

Electronic configuration = 2, 5

Atomic number of H = 1

Electronic configuration = 1

So hydrogen needs 1 more electron to complete its duplet and nitrogen needs three more electrons to complete its octet

Hence three hydrogen atoms will combine with nitrogen to form ammonia

This can be viewed in the pic below