How many electrons are present in the valence shell of `P` in `PCl_3` ?

How many electrons are present in the valence shells of the central atoms in the molecules of BeCl_(2), BF_(3) and PCl_(5) ?

How many electrons are presents in the outer shell of carbon?

How many electrons are there in valence shell of Mg atom?

How many electron pairs are present in valence shell of oxygen in wter molecule ?

How many electrons can be present in the valence shells of metal atoms and non-metal atoms?

When an electron is added in the valence shell

How many electrons pairs are present in valence shell of oxygen in water molecule