DPP – 11C24
Hydrogen Spectrum
Q1. Calculate the wavelength of light emitted in Hydrogen atom if electron undergoes transition from 2nd to 4th orbit. (Ans: 486 × 10−7 cm)
Q2. What transition in the Hydrogen Spectrum would have the same wavelength as the Balmer Series in the 𝐻𝑒+ is the electron comes form 4th orbit?
(Ans: 𝑛1= 1, 𝑛2= 2)
Q3. Calculate maximum number of emission line emitted when electron form n = 6 to ground state. (Ans: 15 lines)
Q4. Calculate the wave number for the longest wavelength in the Balmer series of H atom. (Ans: 𝑛1= 2, 𝑛2 = 3)
Q5. What is the wave number of an electron with shortest wavelength radiation in Lyman Spectrum of 𝐻 + atom. (Ans: 8.226 × 104 𝑐𝑚−1 )