Question

electronic configuration of M 3+ is [ Ar]3d10 4s2, it belongs to which block in the periodic table?

Answer 1

p block..............

Answer 2

It belongs to the p block.

• The electronic configuration of $M^{+3}$ is $[Ar]3d^{10}4s^2$.
• It has a +3 oxidation state so, the total number of electrons is
• $18 + 10 + 2 + 3 = 33$
• Thus the atomic number is 33 and the element is Arsenic.
• Arsenic belongs to the nitrogen family in the periodic table.
• It is a p block element of group 15.