Question

The electronic configuration of silicon is ______and that of sulfur is ______.

• A. $1s^{2}2s^{2}2p^{6}3s^{2}3p^2$
• B. $1s^{2}2s^{2}2p^{6}3s^{2}3p^4$

Answer 1

Electronic configuration:

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

Electronic configuration of silicon:

• The atomic number for silicon$\left(\mathrm{Si}\right)$ is $14$.
• The electronic configuration for silicon is $1s^{2}2s^{2}2p^{6}3s^{2}3p^2$.

Electronic configuration of sulfur:

• The atomic number for sulfur$\left(\mathrm{S}\right)$ is $16$.
• The electronic configuration for sulfur is $1s^{2}2s^{2}2p^{6}3s^{2}3p^4$.

Hence, the electronic configuration of silicon is $\mathbf{1}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{p}}^{\mathbf{6}}\mathbf{3}{\mathbf{s}}^{\mathbf{2}}\mathbf{3}{\mathbf{p}}^{\mathbf{2}}$ and that of sulfur is $\mathbf{1}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{s}}^{\mathbf{2}}\mathbf{2}{\mathbf{p}}^{\mathbf{6}}\mathbf{3}{\mathbf{s}}^{\mathbf{2}}\mathbf{3}{\mathbf{p}}^{\mathbf{4}}$.