Question

what is meant by atomic spectra

Answer 1

the spectrum of frequencies of electromagnetic radiation emitted or absorbed during transitions of electrons between energy levels within an atom. Each element has a characteristic spectrum by which it can be recognized

Answer 2

atomic spectrum - (physics) a spectrum of radiation caused by electron transitions within an atom; the series of spectrum lines is characteristic of the element

natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"

spectrum - an ordered array of the components of an emission or wave

fine structure - the presence of groups of closely spaced spectrum lines observed in the atomic spectrum of certain elements; "the fine structure results from slightly different energy levels"