Write Lewis symbols for the following atoms and ions : S and `S^(2-), Al and Al^(3+)`. H and `H^(-)`.

Explanation

a. `S(Z=16),(1s^(2),2s^(2),2p^(6),3s^(2)3p^(4)),` Lewis symbol `rArr :ddotS:`
`S^(2-)` ion `(3s^(2)3p^(6))`,Lewis symbol `rArr ddotunderset(..)[[:S:]]^(2-)`
b. `Al(Z=13)(1s^(2),2s^(2),2p^(6),3s^(2)3p^(1))`,
Lewis symbol `rArr underset(.)(.Al.)`
`Al^(3+)` ion `(3s^(0)3p^(0))`, Lewis symbol `rArr [Al]^(3+)`
c. `H(Z=1)(1s^(1))`, Lewis symbol `rArr overset(.)(H)`
`H^(ө)` ion `(1s^(2))`, Lewis symbol `rArr H:`