The D And F Block Elements Ques 79
79. General electronic configuration of lanthanides is [Xe] 4f^n 5d^1 6s^2
[1991, 2002]
(a) $(n-2) f^{1-14}(n-1) s^{2} p^{6} d^{0-1} n s^{2}$
(b) $(n-2) f^{10-14}(n-1) d^{0-1} n s^{2}$
(c) $(n-2) f^{0-14}(n-1) d^{10} n s^{2}$
(d) $(n-2) d^{0-1}(n-1) f^{1-14} n s^{2}$
Show Answer
Solution:
- (a) The Lanthanides are not transition metals but inner transition metals from atomic numbers $58(Ce)$ to $71(Lu)$.
Hence the electronic configuration becomes :
$ (n-2) f^{1-14}(n-1) s^{2} p^{6} d^{0-1} n s^{2} $
BETA
