electron configurations  [ENDORSED]

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Tiffany Cao 1D
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electron configurations

Postby Tiffany Cao 1D » Sat Oct 21, 2017 4:03 pm

When writing out electron configurations, why can't you just write out 2p^2, instead of 2px^1 2py^1. Are they both the same configurations?

William Lan 2l
Posts: 73
Joined: Fri Sep 29, 2017 7:07 am

Re: electron configurations  [ENDORSED]

Postby William Lan 2l » Sat Oct 21, 2017 4:07 pm

you can write 2p^2. Prof Lavelle said that he accepts both ways of writing it. It's just that writing 2px^1 and 2py^1 is more specific and prevents ambiguity to electron spin.

Rachel Formaker 1E
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Re: electron configurations

Postby Rachel Formaker 1E » Sun Oct 22, 2017 1:11 am

To clarify, the 2p electron subshell has 3 orbitals, 2px, 2py, and 2pz, each of which can hold 2 electrons.

According to Hund's Rule, if electrons in the same subshell can occupy different orbitals, then they will do so.

So when an atom has 2 electrons in the 2p subshell, they will occupy the 2px orbital and the 2py orbital.

The notation 2px1 2py1 specifies this, but writing 2p2 with a knowledge of Hund's rule tells you the same thing.


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