Atomic Structure Question 269
Question: The electronic configuration (outermost) of $ M{n^{+2}} $ ion (atomic number of $ Mn=25 $ ) in its ground state is
Options:
A) $ 3d^{5},4s^{0} $
B) $ 3d^{4},4s^{1} $
C) $ 3d^{3},4s^{2} $
D) $ 3d^{2},4s^{2}4p^{2} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ _{25}Mn=[Ar],3d^{5}4s^{2} $
$ M{n^{2+}}=[Ar]3d^{5},4s^{0} $
