is it 4s^2 4p^4
or 3d^10 4s^2 4p^4?
do I need to include the d's?
2007-03-01 12:44:02 · 4 answers · asked by awe 2 in Science & Mathematics ➔ Chemistry
The valence shell is the outermost, the one that reacts with other elements. Se is atomic no 34. I think it's 2-8-18-6 or something similar.... I'm 99% sure the valence shell has 6 electrons in the valence shell (-2 is most common for compounds).
But if you have the orbits, just include the outermost shell.
2007-03-01 12:57:46 · answer #1 · answered by Meg W 5 · 0⤊ 0⤋
Valence shell is the outermost energy level of an atom. You probably mean the electron cloud configuration. The electron cloud configuration for Se is 3d10 4s2 4p4
2007-03-01 20:52:46 · answer #2 · answered by Mr. hahaha 2 · 0⤊ 0⤋
[Ar].3d10.4s2.4p4
[Ar]. is the shortened way to write this configuration which is 1s^2 2s^2 2p^6 3s^2 3p^6
2007-03-01 20:53:15 · answer #3 · answered by Bryant M. 4 · 1⤊ 0⤋
Yes, you do include the d's.
2007-03-01 20:51:27 · answer #4 · answered by cattbarf 7 · 0⤊ 1⤋