`Na^(+)` has completely filled K and L shells. Explain?

Cl^(-) has completely filled K and L shells. Explain.

Cl-has completely filled K, & L shells. Explain

Cl-has completely filled K, L & M shells. Explain it based on Bhor-Bury theory. (AS_(1))

Completely filled shells in actinides are

An atom has its K and L shells completely filled and seven electrons in the M-shell. Find out the total number of p-electron in an atom ?

An atom has its K and L shells completely filled and six electrons in the M shell. How many p-electron are there in the atom ?