Asked by tom
whats the noble has configuration for chromium?
is it [Ar] 4s^2 3d^4
is it [Ar] 4s^2 3d^4
Answers
Answered by
bobpursley
Nope, nope, nope.
[Ar] 3d5 4s1
you need some practice on looking at energy levels, and memorizing them.
[Ar] 3d5 4s1
you need some practice on looking at energy levels, and memorizing them.
Answered by
tom
how is it 4s1?
Answered by
bobpursley
There are two exeptions to the filling order: Copper and Cr.
https://www.brightstorm.com/science/chemistry/the-atom/exceptions-to-electron-configuration/
https://www.brightstorm.com/science/chemistry/the-atom/exceptions-to-electron-configuration/
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