Question

fill in the information missing from this table:
some electron shells
shell subshells
2 2s, 2p
3
4

Explanation:

Step1: Recall electron shell and sub - shell rules

The formula for the number of sub - shells in a shell with principal quantum number \(n\) is that the sub - shells are \(s,p,d,f,\cdots\) and the number of sub - shells is equal to \(n\). For a shell with \(n = 3\), the sub - shells are \(3s,3p,3d\) (since \(l=0,1,2\) for \(s,p,d\) sub - shells respectively and \(l\) can take values from \(0\) to \(n - 1\)). For a shell with \(n = 4\), the sub - shells are \(4s,4p,4d,4f\) (since \(l = 0,1,2,3\) for \(s,p,d,f\) sub - shells respectively and \(l\) can take values from \(0\) to \(n - 1\)).

Answer:

For shell \(3\): \(3s,3p,3d\); For shell \(4\): \(4s,4p,4d,4f\)