Question

The electronic configuration of the element with atomic number $29$is ?

Answer 1

Electronic configuration:

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

Electronic configuration of copper:

• The given atomic number is $29$ so the element is copper $\left(\mathrm{Cu}\right)$.
• The electronic configuration of copper is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^1$.
• In terms of noble gas, the electronic configuration of copper can also be written as $\left[\text{Ar}\right]3d^{10}4s^1$.
• It is a d-block element.

Hence, the electronic configuration of the element with atomic number $29$ is $\mathbf{1}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{p}}^{\mathbf{6}}\mathbf{3}{\mathbf{s}}^{\mathbf{2}}\mathbf{3}{\mathbf{p}}^{\mathbf{6}}\mathbf{3}{\mathbf{d}}^{\mathbf{10}}\mathbf{4}{\mathbf{s}}^{\mathbf{1}}$.