1. Why is the electron configuration of chronium [AR] 3d5 4s1, isnt the 4s sub shell supposed to fill first?
2. why is the formation of an Mn2+ ion favored over Mn3+?
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- Thread Starter
- 20-01-2014 21:41
- 20-01-2014 23:27
1. There is increased stability for half filled or completely filled d subshells so 3d5 4s1 is lower in energy than 3d4 4s2.
2. What is Mn's outer electronic configuration? This is also to do with half-filled d subshells