In the previous blog post, i discussed the Strategy on Order of Filling Orbitals, which is always from an orbital of lower energy level and proceeds to the orbital of the next higher energy level.
Today, i am going to share with you a method to determine the following in a particular shell (i.e. Principal Quantum Shell):
- No. of sub-shells
- No. of orbitals
- Maximum no. of electrons
Let’s take a look at the video.
Length of video: 3.49 mins
Link to video: http://www.youtube.com/watch?v=xXdlAv-SO7c
PS: Feel free to leave me a comment OR forward this video to your friends
I am sure you found the above video teaching useful to you.
To recap, a shell is a group of orbitals that are of the same distance from the nucleus.
Each successive shell has a different number of orbitals in it.
In a certain Principal Quantum Shell i.e. nth shell, there will be n sub-shells, n2 orbitals and thus a maximum of 2n2 electrons.
Look forward to the next blog!

Thanks Sean ,
I learn more in 10 minutes of your videos compared to 2 hours of chem lecture
Thanks alot for your compliment Jastina!
Enjoy learning Chemistry,
Sean Chua
Sir,what is the reason for lower and higher energy levels of orbitals? also, what is the difference between sub-shells and orbitals?
I love your way of teaching please post more lectures for free on your blog:-)