Question

The electronic configuration of chromium is__________.

Answer 1

Electronic configuration:

• The distribution of electrons into orbitals of an atom is called its electronic configuration.

Electronic configuration of chromium:

• The atomic number for chromium$\left(\mathrm{Cr}\right)$ is $24$.
• The electronic configuration of chromium is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{5}4s^1$.
• In terms of noble gas, the electronic configuration of chromium can also be written as $\left[\text{Ar}\right]3d^{5}4s^1$.
• It is a d-block element.

Hence, the electronic configuration of chromium is $\mathbf{1}{\mathit{s}}^{\mathbf{2}}\mathbf{2}{\mathit{s}}^{\mathbf{2}}\mathbf{2}{\mathit{p}}^{\mathbf{6}}\mathbf{3}{\mathit{s}}^{\mathbf{2}}\mathbf{3}{\mathit{p}}^{\mathbf{6}}\mathbf{3}{\mathit{d}}^{\mathbf{5}}\mathbf{4}{\mathit{s}}^{\mathbf{1}}$.