Question

if n is equal to 3 mention the orbitals present in the cell and write maximum number of electron in the Shell

Answer 1

if n = 3 then l = 2
and maximum number of electrons in the shell is =2(n)2
now =2(3)2
=2(9)
=18

Answer 2

The orbitals present in n=3 are 9, and the maximum number of electrons in the shell is 18.

• n =3, where n is the principal quantum number.
• n tells about the shell in which an electron is present.
• The number of orbits present in this shell is 9 because it has one s-subshell which has only one orbital, one p-subshell which has 3 orbitals, and one d-subshell which has 5 orbitals. So, a total of 1+3+5 is 9 orbitals present in n=3.
• Maximum number of electrons N, that can be occupied by a shell is-

        N = 2 x n²

        where, n is the principal quantum number

        As, n = 3

        ∴ N = 2 x 3²

               = 2 x 3 x 3

               = 6 x3

               = 18

          N  = 18 electrons

• Therefore, for n = 3, the total number of orbitals present is 9, and the maximum number of electrons in the shell is 18 electrons.