The correct ground state electronic configuration of chromium atom is:
(1) [Ar] 3d^{5} 4s^{1}
(2)[Ar]3d^{4} 4s^{2}
(3) [AR]3d^{6} 4s^{0}
(4)[Ar]4d^{5} 4s^{1}
Ans: [Ar] 3d^{5} 4s^{1}