Question

In what respect does 3s sub-Shell differ from 4s sub-shell?​

Answer 1

Answer:

in the energy and in the principal quantum number (n)

Explanation:

the energy of 3s sub-shell is less than 4s sub-shell

and the principal quantum number of 3s sub-shell (n)= 3 but the principal quantum number of 4s sub-shell (n) = 4