Question

what is shell no. and orbital ?

Answer 1

Relating to an orbit is known as orbital.

Answer 2

Shell number is the energy value or the energy shell of an atom which indicates the Energy level of a shell..It is denoted by the letter 'n'....Goes on as n= 1,2,3'etc;

Orbitals are the graphically marked regions where the probability of findings an electron is maximum..or The place where we can find many electrons... Basically there r 4 orbitals as s,p,d,f

Hope this helps u!!!!