Elements can be identified based on their emission spectrum because each element:

emits a characteristic set of discrete wavelengths, according to its electronic energy levels

emits a characteristic set of discrete wavelengths, depending on the amount of energy applied

has its own inherent, identifiable color to start with

has the same basic pattern of spectral lines with few exceptions

Respuesta :

Answer is: emits a characteristic set of discrete wavelengths, according to its electronic energy levels.

Emission spectrum of a chemical element is the spectrum of frequencies emitted due to an atom making a transition from a high energy state to a lower energy state.

Each transition has a specific energy difference.

Each element's emission spectrum is unique.