What do you understand by lone pair and shared pair? - Vidyadip

Question

What do you understand by lone pair and shared pair?

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Answer

Lone pair: A pair of electrons which is not shared with any other atom is known as the lone pair of electrons.
For example in $NH_3$, Nitrogen has a lone pair of electrons which is not shared with any hydrogen atom.
Shared pair: A pair of electrons which is shared with other atoms to form a bond is known as shared pair of electrons.
For example in HCl the pair of electrons responsible for bond formation between H and Cl is called shared pair.

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