Question

$Cu^{2+}$ will have the following electronic configuration

• A. $1s^{2}, 2s^{2}2p^{6}, 3s^{2}3p^{6}3d^{10}$
• B. $1s^{2}, 2s^{2}2p^{6}, 3s^{2}3p^{6}3d^{9}, 4s^{1}$
• C. $1s^{2}, 2s^{2}2p^{6}, 3s^{2}3p^{6}3d^{9}$
• D. $1s^{2}, 2s^{2}2p^{6}, 3s^{2}3p^{6}3d^{10}, 4s^{1}$

Answer 1

Answer: (C)

Ground state of $Cu^{29} = 1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3p^{10}4s^{1}$
$Cu^{2+} =1s^{2}2s^{2}2p^{6} 3s^{2}3p^{6}3d^{9}$