Page **1** of **1**

### Electrons in Orbitals

Posted: **Fri Nov 02, 2018 11:15 pm**

by **joanneyseung22**

How do find the number of electrons when the question gives us quantum numbers (for example, n=3, l=1)? I think I understand the concept, but I just needed some clarification to make sure.

### Re: Electrons in Orbitals

Posted: **Fri Nov 02, 2018 11:40 pm**

by **katherinemurk 2B**

For example when n=3 and l=2 we know this corresponds to 3d. Since l is equal 2 we know the values for ml can be: -2,-1,0,1,2. This tells us how many orbitals there are. In this case it is 5 orbitals. Since there are 2 electrons in each orbital, there are 10 electrons

### Re: Electrons in Orbitals

Posted: **Fri Nov 02, 2018 11:59 pm**

by **maldonadojs**

Also, a way to check if the number of orbitals you have are correct, you can use the formula n^2. The n is the energy level. And to check if you need the number of electrons, you can use the formula 2n^2. It is more important to understand the concept and the n,l,m levels.