Quantum Numbers Question

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AChoudhry_1L
Posts: 55
Joined: Sat Sep 07, 2019 12:17 am

Quantum Numbers Question

Postby AChoudhry_1L » Tue Nov 05, 2019 10:18 pm

If n=2, how many possible orbitals are there?

April Meza 3K
Posts: 66
Joined: Sat Sep 21, 2019 12:36 am

Re: Quantum Numbers Question

Postby April Meza 3K » Tue Nov 05, 2019 10:22 pm

I believe it is 4 orbitals.

Sebastian Lee 1L
Posts: 134
Joined: Fri Aug 09, 2019 12:15 am
Been upvoted: 1 time

Re: Quantum Numbers Question

Postby Sebastian Lee 1L » Tue Nov 05, 2019 10:22 pm

If n=2:
l can be l=0, 1 because l=0,...,n-1

If l=0:
ml = 0 because ml = -l,...,l

If l=1:
ml = -1, 0, 1

So we can see how many ml numbers there are which correspond to each orbital. There is one 2s orbital (n=2, l=0) and there are three 2p orbitals (n=2, l=1) each one having a ml of -1, 0, or 1. In total there are 4 possible orbitals in the n=2 shell.


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