The number of electron pairs present in the valence shell of central atom in `SF_6` molecule are

The number of electrons in the valence shell of a semiconductor is

The number of electrons in the valence shell of calcium is

The number of electrons in the valence shell of calcium is:

The number of electrons in the valence shell of the central atom of a molecule is 8. the molecule is

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

The number of electrons present int the valence shell of an atom with atomic number 38 is

The electrons present in the valence shell of a noble gas atom can be:

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

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