Write the electronic configuration of the following ions :
`(a ) H^(-) ( b) Na^(+) (c ) O^(2-) (d ) F^(-)`

Explanation

(a ) `H^(-) (2e ) ` So ,`1s^(2)`
( b) `Na^(+) (11-1)=10^(2) ` So `1s^(2) 2s^(2) 2p^(6) 3s^(0)`
(c ) `O^(2) (8+2)=10^(2) ` So `1s^(2) 2s^(2) 2p^(6)`
(d ) `F^(-) (9+1) = 10^(2) `So `1s^(2) 2s^(2) 2p^(6)`