Question

which descriptions apply to isomers? check all that apply. same molecular formula different molecular formula same structural formula different structural formula only hydrocarbons same number of each kind of atom same geometric arrangement of atoms

Explanation:

Isomers are defined as compounds with the same molecular formula (so same number of each kind of atom) but different structural formula (different geometric arrangement of atoms). They are not limited to hydrocarbons.

Answer:

same molecular formula, different structural formula, same number of each kind of atom