Answer
a) $NaH$ is ionic;
b) $H_2S$ is molecular;
c) $AlH_3$ is ionic;
d) $RbH$ is ionic;
e) $NH_3$ is molecular.
Work Step by Step
If hydrogen bonds with a metal, the obtained compound is ionic, whereas a bond with a nonmetal yields a molecular compound. Therefore:
a) $NaH$ is ionic;
b) $H_2S$ is molecular;
c) $AlH_3$ is ionic;
d) $RbH$ is ionic;
e) $NH_3$ is molecular.
