Question

The series corresponding to minimum wavelength transition in H-atom 

(a) Balmer series 

(b) Lyman series 

(c) Paschen series 

(d) Brackett series

Answer 1

The correct option is (b) Lyman series.

Explanation:

 Lyman series is obtained when an electron jumps to the first orbit (n₁ = 1) from any outer orbit (n₂ = 2,3, 4...)

For H, Z = 1 and R is the Rydberg',s constant

R = 1.097 x 10⁷ m^-1. In this series. the shortest wavelength or the limit of this series (For n₁ = 1 and n₂ = ∞) is nearly = 911 Å.