Question

What is the electron configuration of ${\mathrm{Hg}}^{2+}$?

Answer 1

Mercury:

• Mercury is a chemical element with an atomic number $80$ and atomic symbol $\mathrm{Hg}$.
• It belongs to Group-$12$ and the sixth period.
• It is known as transition metal as it belongs to the d-block element.
• The atomic number of Mercury $\left(\mathrm{Hg}\right)$ is $80$.

Electronic configuration of Mercury:

• The electron configuration of Mercury is $1s^2\mathit{2}{s}^{2}2p^{6}3s^2\mathit{3}{p}^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{6}4f^{14}5d^{10}6s^2$.
• It can also be written as $\left[\mathrm{Xe}\right]4f^{14}5d^{10}6s^2$.

Electronic configuration of ${\mathrm{Hg}}^{2+}$:

• When Mercury$\left(\mathrm{Hg}\right)$ loses its two electrons it forms Mercury ion $\left({\mathrm{Hg}}^{2+}\right)$.
• Thus, the electronic configuration of ${\mathrm{Hg}}^{2+}$is $1s^2\mathit{2}{s}^{2}2p^{6}3s^2\mathit{3}{p}^{6}3d^{10}4s^{2}4p^{6}4d^{10}5s^{2}5p^{6}4f^{14}5d^{10}$.
• It can also be written as $\left[\mathrm{Xe}\right]4f^{14}5d^{10}$.