Question

What is the VSEPR code and shape of `N_2`?

Answer 1

A diatomic molecule must be linear, but it is the disposition of the electrons that is important.

Explanation:

Each nitrogen atom (`Z=7`) has `5` valence electrons, giving 10 valence electrons in total. 4 of these electrons are presumed to form lone pairs on each nitrogen atoms; the remaining 6 electrons are shared between the nitrogen nuclei to form a very stable triple bond, `:N-=N:`. This triple bond accounts for the very short `N-N` distance (`1.10xx10^(-10)m`), and the high bond dissociation energy of `226` `kcal*mol^-1`.