Question

What is the electronic configuration of Barium?

Answer 1

Electronic configuration: The arrangement of electrons into the orbitals of an atom using some fundamental principle is called its electronic configuration.

Electronic configuration of Barium:

• The chemical symbol of Barium is $\mathrm{Ba}$.
• The atomic number of Barium is $56$ and it belongs to the sixth period and the second group of the periodic table.
• As the atomic number is equal to the number of electrons present in a neutral element.
• So, the number of electrons are $56$.
• The electronic configuration of Barium is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^{2}3{\mathrm{d}}^{10}4{\mathrm{p}}^{6}5{\mathrm{s}}^{2}4{\mathrm{d}}^{10}5{\mathrm{p}}^{6}6{\mathrm{s}}^2$.
• The electronic configuration of Barium in noble gas notation is represented as $\left[Xe\right]6s^2$.