- #1
MichaelXY
- 93
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[SOLVED] Electron Configuration
Something in chemistry really has me perplexed. We are doing electron configuration stuff. I think I have a fairly good grip on it after I was able to let go of the Bohr Model.
My question is this. Chromium has 24 electrons which should fit into the first 3 shells 3s, 3p, 3d yet it uses the 4th shell. Why does it not fill up the third shell?
The way it seems it should be to me is 1s2,2s2,2p6,3s2,3p6,3d6 not 3d5,4s1
Thanks
Something in chemistry really has me perplexed. We are doing electron configuration stuff. I think I have a fairly good grip on it after I was able to let go of the Bohr Model.
My question is this. Chromium has 24 electrons which should fit into the first 3 shells 3s, 3p, 3d yet it uses the 4th shell. Why does it not fill up the third shell?
The way it seems it should be to me is 1s2,2s2,2p6,3s2,3p6,3d6 not 3d5,4s1
Thanks