COMEDK2021PhysicsAtomic Physics
The Lyman series of a hydrogen atom belongs in which category
Options
- Aultraviolet region
- Binfrared region
- Cvisible region
- DNone of these
Correct answer
A. ultraviolet region
Step-by-step solution
The energy levels of a hydrogen atom are given by the Rydberg formula: 1 = R ( 1 n₁^2 - 1 n₂^2 ) , where R is the Rydberg constant, n₁ is the lower energy level, and n₂ is the higher energy level. For the Lyman series, the electron transitions occur to the ground state, which corresponds to n₁ = 1 . The transitions are from n₂ = 2, 3, 4, . The energy difference E = E_ n₂ - E₁ for these transitions is very large, falling in the range of ultraviolet radiation. Therefore, the Lyman series lies in the ultraviolet regio