Question

The shell having n=3 contains how many subshells?

Answer 1

3 subshells.

Explanation:

I have written a similar answer to this question, I will copy it here I hope it helps:

Shell is the energy level of an atom (`n=1, 2, 3, etc.`). Inside every shell there is one or more subshells (`s, p, d, f, etc.`). Inside every subshell there is one or more orbitals .

The best way to explain this is using the quantum numbers:

where,
`n`: principal quantum number
`l`: Angular momentum quantum number

The `s` subshell contains 1 orbital.
The `p` subshell contains 3 orbitals.
The `d` subshell contains 5 orbitals.
The `f` subshell contains 7 orbitals.