Question

Sorry for asking but I want to know all about how the electrons in the atom work like what's their mass,energy levels ,etc.

Answer 1

This is a good explanation for the electron energy levels
http://cas.sdss.org/DR5/en/proj/advanced/spectraltypes/energylevels.asp

Answer 2

Hey there I'll briefly describe without goin in to deep okai?
Electrons in S orbitals: These consist of only one orbital. And there 3D shape is like a sphere.When the size of the S orbital increases the increase of energy levels the Energy in one S orbital also increases.
The p sub energy level have 3 orbitals which are same in size and same in their dumbbell shape .
But they are in 3 different planes. All the orbitals in the same energy level has the same amount of energy. therefore the p orbitals in lesser energy levels have less energy and p orbitals in higher energy levels have higher energy.
The d sub energy level consists of 5 orbitals known as d{xy}, d{yz}, d{xz}, d{z^2}, d {x^2-Y^2}. Here the first three orbitals I have mentioned have the similar shape whereas other 2 differ in shape. Here also the same scenario when u go to higher energy levels the energy is high.
F sub energy level comprises of 7 orbitals. So they a hold complex shape. and I"m not really sure about that.
If u need to know about the location of electrons in energy levels you have to go through the quantum numbers again.