The electronic configuration of Cu (at.no. = 29 ) is

Question

The electronic configuration of Cu (at.no. = 29 ) is (A) 1s2,2s2 2p6,3s2 3p6,4s2, 3d9 (B) 1s2, 2s2 2p6, 3s2 3p6 3d10, 4s1 (C) 1s2, 2s2 2p6, 3s2 3p6, 4s2 4p6, 5s2 5p1 (D) 1s2, 2s2 2p6, 3s2 3p6, 4s2 4p6, 3d3

Tardigrade Admin · Accepted Answer

The electronic configuration of Cu(29) is an exceptional case due to exchange of energy and symmetrical distribution of electrons in orbital to acquire more stability.

Q. The electronic configuration of $C u$ (at.no. $= 29$ ) is

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}, 4 s^{2}, 3 d^{9}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6} 3 d^{10}, 4 s^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}, 4 s^{2} 4 p^{6}, 5 s^{2} 5 p^{1}$

$1 s^{2}, 2 s^{2} 2 p^{6}, 3 s^{2} 3 p^{6}, 4 s^{2} 4 p^{6}, 3 d^{3}$

The electronic configuration of $C u (29)$ is an exceptional case due to exchange of energy and symmetrical distribution of electrons in orbital to acquire more stability.

Q. The electronic configuration of Cu (at.no. =29 ) is

1s2,2s22p6,3s23p6,4s2,3d9

1s2,2s22p6,3s23p63d10,4s1

1s2,2s22p6,3s23p6,4s24p6,5s25p1

1s2,2s22p6,3s23p6,4s24p6,3d3