Say it
1. A set of closely spaced energy levels in an atom, molecule, or metal. 2. A set of closely spaced lines in an absorption spectrum or emission spectrum . 3. A range of frequencies or wavelengths .
Say it
1. A set of closely spaced energy levels in an atom, molecule, or metal. 2. A set of closely spaced lines in an absorption spectrum or emission spectrum . 3. A range of frequencies or wavelengths .
General chemistry English glossary. Английский глоссарий общей химии. 2012