Na+ has completely filled K and L shells. Explain.

Q.9:- Na+ has completely filled K and L shells. Explain.

 

Answer:-

Atomic number of sodium (Na) = 11

No. of electrons in Na = 11
No. of electrons in Na+ = 11 – 1 = 10
Electronic configuration of  Na+ → 2, 8
                                                       K   L
Thus, in Na+, K and L shells are completely filled.