## Number of Orbitals

Victoria Luu - 1C
Posts: 60
Joined: Fri Sep 28, 2018 12:15 am

### Number of Orbitals

I was wondering how you can find the number of orbitals and electrons based on the subshell notation. I'm a lil rusty on this section, so any help would greatly appreciated!

Meachelle_Lum_1I
Posts: 92
Joined: Fri Sep 28, 2018 12:24 am

### Re: Number of Orbitals

Hi! I guess the best way to answer your question would be to summarize the four quantum numbers.
There's the principle quantum number (shell) which simply goes by n=1, 2, 3... and is the average e- distance from the nucleus.
Then, there's the angular quantum number (subshell) represented by l, which ranges from 0 to (n-1). This determines the e- orbital shape.
l=0 is the s subshell
l=1 is the p subshell
l=2 is the d subshell
l=3 is the f subshell
Third is the magnetic quantum number (orbital) represented by m sub l, which ranges from -l to +l. This determines the orientation of an electron's orbital.
s has 1 orbital
p has 3 orbitals
d has 5 orbitals
f has 7 orbitals
Lastly, there's the spin quantum number represented by m sub s, and is independent of all other quantum numbers. It's either +1/2 or -1/2.
Each orbital contains up to two electrons.
Hope this helps!

904914909
Posts: 60
Joined: Fri Sep 28, 2018 12:26 am

### Re: Number of Orbitals

This is very helpful, thank you for the insight!

Yiwen Chen-3G
Posts: 30
Joined: Fri Sep 28, 2018 12:25 am