Answer:
b. H-3
Step-by-step explanation:
H *is atom because the smallest molecule particles of an element
H-3 *is compound because hidrogen a neutral particles consists of same non-metal atoms which are covelently-bonded
H2O * a molecule but a neutral particles consist of different non mental atoms whisc are convalently-bonded
0-16 * is it 16 is relative atomic mass??