Atomic Structure Question 267
Question: The electronic configuration of chromium is
Options:
A) $ [Ne]3s^{2}3p^{6}3d^{4},4s^{2} $
B) $ [Ne]3s^{2}3p^{6}3d^{5},4s^{1} $
C) $ [Ne]3s^{2}3p^{6},4s^{2}4p^{4} $
D) $ [Ne]3s^{2}3p^{6}3d^{1},4s^{2}4p^{3} $
Show Answer
Answer:
Correct Answer: B
Solution:
3d subshell filled with 5 electrons (half-filled) is more stable than that filled with 4 electrons. $ 1,,4s $ electrons jumps into $ 3d $ subshell for more sability.
