Determining electrons

[Maggie Doan 1I]

How do you find the possible number of electrons given by quantum numbers?

Ex: n=2, l= 1
n=4, l=0, ml=-2, ms= -1/2

[Nada AbouHaiba 1I]

There are 2 electrons (up/down spin) per magnetic quantum.

So for example n=2 l=1
Ml = -1,0,1
so for each of these three there are 2 electrons. So in this case it's a total of 6 electrons.

For n=4 ... ms=-1/2
It is only 1 electron because they gave you all four quantum numbers and no 2 electrons in the same atom can have the exact same quantum numbers.

[Erica Li 1C]

You look at the number of orbitals in a given subshell and then multiply it by 2 since there are 2 electrons in each orbital
(so if l=2, there are 5 orbitals, meaning 10 electrons)

[keyaluo4C]

I find it easiest to think of it as shell, subshells, and orbitals.
Ex: n=2, l= 1
n = 2 means it is in the 2nd shell and l = 1 means it must be in the p orbital. There are 6 possible electrons in the 2p orbital.