Question

what is the main difference between shells and subshells explain it or I will report​

Answer 1

Answer:

Shells are a collection of subshells with the same principle quantum number, and subshells are a collection of orbitals with the same principle quantum number and angular momentum quantum number.

A subshell is a group of orbitals. Subshells are collections of orbitals which share the same principle quantum number and angular momentum quantum number,