Q. 9.    Na^{+} has completely filled K and L shells. Explain.

Answers (1)
P Pankaj Sanodiya

The atomic number of Na = 11

No. of electrons in Na atom = 11

In Na^{+} ,the positive charge is obtained due to the loss of one electron from M shell of Na atom.

So, No. of electrons in Na+ ion = 11 -1 = 10

Hence, electronic configuration of Na+ = 2, 8

In Na+, K and L shells are completely filled since K shell can have a maximum of 2 electrons and L shell can have a maximum of 8 electrons.

Exams
Articles
Questions