Q. Identify the transition element.
A) $1s^{2},\ 2s^{2}2p^{6},\ 3s^{2}3p^{6},4s^{2}$
B) $1s^{2},2s^{2}2p^{6},3s^{2}3p^{6}3d^{2},4s^{2}$
C) $1s^{2},\ 2s^{2}2p^{6},\ 3s^{2}3p^{6}3d^{10},4s^{2}4p^{2}$
D) $1s^{2},2s^{2}2p^{6},3s^{2}3p^{6}3d^{10},4s^{2}4p^{1}$
Explanation
(b)
Transition elements are those elements which have partially filled $d$-subshells in their elementary form. Therefore, the general electronic configuration of $d$-block element is $(n - 1)d^{1 - 10}ns^{1 - 2}$.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.