The Lyman series occurs between 91.2 nm and 121.6 nm , the Balmer series occurs between 364.7 nm and 656.5 nm and the Paschen series occurs between 820.6 nm and 1876 nm, Identify the spectral regions to which these wavelengths correspond .

Explanation

In electromagnetic spectrum,
a) 91.2-121.6 nm (Lyman series) corresponds to u.v. region.
b) 364.7 - 656.5 nm (Balmer series) corresponds to visible region.
c) 820.6 - 1876 nm (Paschen series) corresponds to I.R, region.