Question

General electronic configuration of lanthanides are

• A. $(n-2)f^{1-14}(n-1)s^2p^6d^{0-1}\,ns^2 $
• B. $(n-2)f^{10-14}(n-1)d^{0-1}\,ns^2 $
• C. $(n-2)f^{0-14}(n-1)d^{10}\,ns^2 $
• D. $(n-2)d^{0-1}(n-1)f^{1-14}\,ns^2 $

Answer 1

Answer: (A)

In lanthanides (at. no. of elements $58$ to $71$ ) the electronic configuration of outermost shells are $(n-2) f^{1-14}(n-1) s^{2} p^{6} d^{0 \text { to } 1} n s^{2} .$