The sBlock Elements - Result Question 36
####42. Electronic configuration of calcium atom can be written as
(a) $[Ne], 4 p^{2}$
(b) $[Ar], 4 s^{2}$
(c) $[Ne], 4 s^{2}$
(d) $[Kr], 4 p^{2}$
[1992]
Show Answer
Solution:
- (b) $ _{20} Ca=1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 4 s^{2}=[A r] 4 s^{2}$