Classification Of Elements And Periodicity In Properties Ques 178
Question: The electronic configuration of the element which is just above the element with atomic number 43 in the same periodic group is [MNR 1992; UPSEAT 1999, 2000, 02]
Options:
A) $ 1s^{2},2s^{2},2p^{6},3s^{2},3p^{6},3d^{5},4s^{2} $
B) $ 1s^{2},2s^{2},2p^{6},3s^{2},3p^{6},3d^{10},4s^{2},4p^{5} $
C) $ 1s^{2},2s^{2},2p^{6},3s^{2},3p^{6},3d^{6},4s^{1} $
D) $ 1s^{2},2s^{2},2p^{6},3s^{2}3p^{6},3d^{10},4s^{1},4p^{6} $
Show Answer
Answer:
Correct Answer: A
Solution:
$ _{25}Mn-3d^{5}4s^{2} $ .
