The number of d electrons in Fe+2 (atomic number of Fe= 26 ) is not equal to that of the:
(1) p-electrons in Ne (At. No.= 10)
(2) s-electrons in (At. No.= 12)
(3) d -electrons in Fe
(4) p-electrons in Cl- (At. No. of = 17)
Ans: p-electrons in Cl- (At. No. of = 17)