Question

Which of the following is the electronic configuration of $C{u}^{2+}$ (Z=29)?

• A. $\left[Ar\right]3d^9$
• B. $\left[Ar\right]4s^{1}3d^8$
• C. $\left[Ar\right]4s^{2}3d^{10}4P^1$
• D. $\left[Ar\right]4s^{1}3d^{10}$

Answer 1

Answer: (A)

$Cu\left(Z=29\right):\left[Ar\right]4s^{1}3d^{10}$

$C{u}^{2+}:\left[Ar\right]3d^9.$