Question

The electronic configuration of the element, Cu(II) is $\left(Ar\right)3d^9$.

• A. True
• B. False

Answer 1

The correct option is A True

Configuration of $Cu$ is $\left[Ar\right]3d^{10}4s^1$

Configuration of $C{u}^{2+}$ is $\left[Ar\right]3d^9$

So, the electronic configuration of the element, $Cu\left(II\right)$ is $\left(Ar\right)3d^9$ is true.