Question

How to know no.Of bond pairs and lone pairs in a molecule?

Answer 1

Explanation:

By knowing the structure of the compound you can easily identify the bond pair and lone pairs in a compound.

* For example in NH3 there are three H attached to the central atom N and there is an extra pair of electrons which have not taken part in bonding, which is the lone pair.

* Again in H2O there are 2 H atoms attached to oxygen so there are 4 electrons left which forms two lone pairs.

*Moreover you can see it this way Lone Pair= (no of valance shell electrons of the central atom - no of electrons taken part in bonding)/2.