" In how many elements does the last electron have the quantum numbers of "n=4" and "l=1?

In how many elements does the electron have the quantum number of n =4 and l = 1 ?

In how many elements does the electron have the quantum number of n =4 and l = 1 ?

In how many elements the last electron will have the following set of quantum numbers, n = 3 and l = 1?

In how many elements the last electron will have the following set of quantum numbers, n = 3 and l = 1?

The electrons identified by quantum numbers n and l

How many electrons in an atom may have the quantum numbers n=4 and l=0 ?

How many electrons in an atom may have the quantum numbers n=4 and l=0 ?

How many electrons in an atom may have the following quantum numbers ? n = 3, l =0

What is the maximum possible number of electrons in an atom that can have the quantum numbers n = 4 and m_(l)=+1 ?