Question

Can someone please clarify this? Each orbital can hold two electrons but what about sublevels how come they can hold more than two electron?

Answer 1

Each sub level can have different number of orbitals. Think of this in terms of the different quantum numbers. n = principal quantum number. For n = 1, you can only have one sub level, s. SO the 1s orbital has 2 electrons.
When you have n = 2, you can have s and p orbitals. 2s orbital has 2 electrons, and the there are 3 different 2p orbitals, 2px, 2py and 2pz. Each can have 2 electrons. So there are 6 electrons in a 2 p orbital.... makes sense?

Answer 2

yes thank you... do have any tips on how I should study chemistry? @Preetha

Answer 3

oh yeah and one more question what is the difference between electron configuration and orbital notation?

Answer 4

Electron configuration is when it looks like this
1s2 2s2
(using the s, p, d, f)

Orbital notation is when you use boxes so like this;