Question

Electronic configuration of the $4^{\text {th }}$ transitional element is:

• A. $1 s ^{2} 2 s ^{2} 2 p ^{6} 3 s ^{2} 3 p ^{6} 4 s ^{2}$
• B. $1 s ^{2} 2 s ^{2} 2 p ^{6} 3 s ^{2} 3 p ^{6} 3 d ^{4} 4 s ^{2}$
• C. $1 s ^{2} 2 s ^{2} 2 p ^{6} 3 s ^{2} 3 p ^{6} 3 d ^{4}$
• D. $1 s ^{2} 2 s ^{2} 2 p ^{6} 3 s ^{2} 3 p ^{6} 3 d ^{5} 4 s ^{1}$

Answer 1

Answer: (D)

$ 4^{th} $ transition element has atomic no. $24$