Question

a student has an unknown sample. how can spectroscopy be used to identify the sample? it can identify the elements in the sample. it can determine the number of electrons in the sample. it can determine the ratio of the elements in the sample. it can determine the molecular structure of atoms in the sample.

Explanation:

Spectroscopy analyzes light - matter interactions to identify elements. It's not for electron count, element ratios or molecular structure directly.

Answer:

It can identify the elements in the sample.