Question

What is the electron configuration of arsenic?

Answer 1

Arsenic(As):

• Arsenic is a p-block element having atomic number 33.
• Arsenic belongs to group 15.

Electronic configuration of Group 15:

• The valence shell electronic configuration of these elements is ${\mathrm{ns}}^2{\mathrm{np}}^3$ .
• These elements have completely filled s orbitals and half-filled p orbitals, making their electronic configuration extra stable.

Electronic configuration of Arsenic:

• The electronic configuration of arsenic is $1{\mathrm{s}}^{2}2{\mathrm{s}}^{2}2{\mathrm{p}}^{6}3{\mathrm{s}}^{2}3{\mathrm{p}}^{6}4{\mathrm{s}}^{2}3{\mathrm{d}}^{10}4{\mathrm{p}}^3$.