What is the electronic configuration of atomic chromium, #Z=24#?

1 Answer
anor277
Jul 1, 2017

Well for the chromium atom, #Z=24#, we gots........

Explanation:

#1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)4s^(1)3d^5#

This is an unusual config......and #"Hund's rule"# of maximum multiplicity operates; half-filled electronic orbitals are somewhat stabilized. In 1st year chem, you probably would not have to know this......in 2nd year inorganic chem., you would have to know this.

Upon ionization, the #4s# and #3d# electrons are removed to give #Cr^(2+)#, #1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^4#; #Cr^(3+)#, #1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^3#.

Related questions
See all questions in Electron Configuration
Impact of this question
6803 views around the world
You can reuse this answer
Creative Commons License