Question

An element has the electronic configuration $1s^{2},2s^{2}2p^{6},$ $3s^{2}3p^{6}3d^{5},4s^{1}$. It is a

• A. s-block element
• B. p-block element
• C. d-block element
• D. Inert gas

Answer 1

Answer: (C)

d-block element

Answer 2

d-block. As the last $e^{-}$ enters in d-subshell.