Question

Write electronic configuration of Na and Ca on the basis of subshell.​

Answer 1

Na:-

Sodium has 11 electrons so the EC followed by

`\\ \sf\Rrightarrow 1s^22s^22p^63s^1`

Ca:-

Calcium has 20electrons so the EC followed by

`\\ \sf\Rrightarrow 1s^22s^22p^63s^23p^63d^2`