Question

Which of the following represents the electronic configuration of a transition element.

• A. $1s^{2},2s^{2}p^{6}.......ns^{2}p^{3}$
• B. $1s^{2},2s^{2}p^{6}.......ns^{2}p^{6}d^{3},(n + 1)s^{2}$
• C. $1s^{2},2s^{2}p^{6}.......ns^{2}p^{6}d^{10},(n + 1)s^{2}p^{1}$
• D. $1s^{2},2s^{2}p^{6}.......ns^{2}p^{6}$

Answer 1

Answer: (B)

$1s^{2},2s^{2}p^{6}.......ns^{2}p^{6}d^{3},(n + 1)s^{2}$

Answer 2

$1s^{2},2s^{2}p^{6}.........ns^{2}p^{6}d^{3},(n + 1)s^{2}$ as last electron enters d-subshell.