Question

Write the electronic configuration of $C{u}^{2+}$ ion. $[Cu=29]$

Answer 1

Electronic configuration of $C{u}^{2+}$ ion is$1s^{2}2s^{2}2p^{6}3s^{2}3p^6{4}^{2}3d^5$In $C{u}^{+2}$ ion copper lost two electrons and attained $C{u}^{+2}$ state.