Question

Why Nitrogen has maximum covalency of $4$?

Answer 1

Nitrogen:

• Nitrogen belongs to $\mathrm{p}-$block elements.
• The atomic number of nitrogen is $7$.
• Nitrogen comes under group$-15$.
• It is a colourless, odourless and tasteless gas.
• It is used to make fertilizers, dyes and explosives.

Covalency of nitrogen:

• Nitrogen shows maximum covalency of $4$. Because of the absence of d orbitals in its valence shell.
• whereas other heavier elements in the group have a higher covalency.
• The nitrogen in its valence shell has only four orbitals available (one $2\mathrm{s}$ and three $2\mathrm{p}$orbitals).
• There are totally five valence electrons three electrons are mutually shared and one lone pair is covalently bonded to the atoms.