Explain emission and absorption spectra. Discuss the general description of line spectra in hydrogen atom .

Explanation

1) Emission spectrum : The spectrum produced by emission spectrum . This spectrum contains bright lines on dark background . This spectrum is of two types . They are (a) Continuous spectrum (b) Discontinuous spectrum.
a) Continuous spectrum : This spectrum contains a continuous band of colours like rainbow . This spectrum is given by molecules and is also known as Molecular spectrum.
b) Discontinuous spectrum : This spectrum consists of sharp , distinct lines This spectrum is given by atoms and is also known as atomic spectrum .
Absorption spectrum : The spectrum produced by absorbed radiation is known as absorption spectrum . This spectrum contains dark lines on bright background.
The position of the lines or bands in both emission and absorption spectra is same .