Atomic Structure Question 207
Question: The correct ground state electronic configuration of chromium atom is
Options:
A) $ [Ar],3d^{5},4s^{1} $
B) $ [Ar],3d^{4}4s^{2} $
C) $ [AR]3d^{6}4s^{0} $
D) $ [Ar]4d^{5}4s^{1} $
Show Answer
Answer:
Correct Answer: A
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.
