Question
Physics Question on Bohr’s Model for Hydrogen Atom
Match List I with List II.List I
(Spectral Lines of Hydrogen for transitions from)| List II
(Wavelength (nm))
---|---
A.| n2 = 3 to n1 = 2| I.| 410.2
B.| n2 = 4 to n1 = 2| II.| 434.1
C.| n2 = 5 to n1 = 2| III.| 656.3
D.| n2 = 6 to n1 = 2| IV.| 486.1
Choose the correct answer from the options given below:
A-II, B-I, C-IV, D-III
A-III, B-IV, C-II, D-I
A-IV, B-III, C-I, D-II
A-I, B-II, C-III, D-IV
A-III, B-IV, C-II, D-I
Solution
The spectral lines of hydrogen follow the Balmer series. Using the wavelengths given:
- Transition n2 = 3 → n1 = 2 corresponds to 656.3 nm (III).
- Transition n2 = 4 → n1 = 2 corresponds to 486.1 nm (IV).
- Transition n2 = 5 → n1 = 2 corresponds to 434.1 nm (II).
- Transition n2 = 6 → n1 = 2 corresponds to 410.2 nm (I).
The correct option is (B) :A-III, B-IV, C-II, D-I.