Among the following, which one is a wrong statement?
(a) PH5 and BiCl5 do not exist
(b) ρp-dp bonds are present in SO2
(c) SeF4 and CH4 have same shape
(d) has bent geometry
(c) PH5 does not exist due to very less electronegativity difference between P and H. Hydrogen is slightly more electronegative than phosphorus, thus could not hold significantly the sharing electrons.
On the other hand, ВіCl5 does not exist due to inert pair effect. On moving down the group, +5 oxidation state becomes less stable while +3 oxidation state becomes more stable.
In SO2,ρp-dp and pp-pp both types of bonds are present.
Thus, SeF4 and CH4 do not have same shape.
Thus, option (c) is incorrect statement.