Atomic Structure Question 207

Question: The correct ground state electronic configuration of chromium atom is

Options:

A) [Ar],3d5,4s1

B) [Ar],3d44s2

C) [AR]3d64s0

D) [Ar]4d54s1

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.



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