Question

the number of electrons that are present in p-orbital of Cl-

Answer 1

Chlorine, Cl , is located in period 3, group 17 of the periodic table, and has an atomic number equal to 17 . This tells you that a neutral chlorine atom will have a total of 17 electrons surrounding its nucleus. Chlorine's electron configuration looks like this. Cl: 1s2,2s-2,2p-6,3s -2,3p - 5.

Answer 2

The atomic number of chlorine is 17 i.e it has 17 electrons.
The electronic configuration of chlorine is 1s -2, 2s - 2, 2p - 6, 3s - 2, 3p - 5
Therefore in the p-orbital there are 11 electrons i.e in 2p - 6 and in 3p - 5.

Hope this helps you.