Question

Electronic configuration of four elements is given below. Which of the following does not belong to the same group?

• A. $\lbrack Kr\rbrack 4d^{10}5s^{2}$
• B. $\lbrack Ar\rbrack 3d^{10}5s^{2}$
• C. $\lbrack Xe\rbrack 5d^{6}5s^{2}$
• D. $\lbrack Xe\rbrack 4f^{17}5d^{10}6s^{2}$

Answer 1

Answer: (C)

$\lbrack Xe\rbrack 5d^{6}5s^{2}$

Answer 2

: It belongs to p – block while other elements belong to d – block and same group.