Question

General electronic configuration of lanthanides is:

• A. $(n-2)f^{1-14}(n-1)d^{0-1}n{s}^2$
• B. $(n-2)f^{10-14}(n-1)d^{10-1}n{s}^2$
• C. $(n-2)f^{0-14}(n-1)d^{10}n{s}^2$
• D. $(n-2)d^{0-1}(n-1)f^{1-14}n{s}^2$

Answer 1

Answer: (A)

$(n-2)f^{1-14}(n-1)d^{0-1}n{s}^2$

In lanthanides (At no. of elements 58 to 71) the electronic configuration of three outermost shelts are $(n-2)f^{1-14}(n-1)d^{0-1}n{s}^2$.

Hence, the correct option is $\text{A}$