What values of l, m_l, and m_s are possible for n = 3?
2 Answers
Well, your set of quantum numbers is not "allowed" for a particular electron because of the value you have for
The values the angular momentum quantum number is allowed to take go from zero to
So, in your case, if
The value for
Likewise,
Therefore, the only value in your set that is not allowed for a quantum number is
There are 4 quantum numbers which describe an electron in an atom.
These are:
If
In your question
If
If
If
These are all the allowed values for
Note that in an atom, no electron can have all 4 quantum numbers the same. This is how atoms are built up and is known as The Pauli Exclusion Principle.