Question

Which of the following statement about hydrogen spectrum are correct?

• A. All the lines of Lyman series lie in ultraviolet region
• B. All the lines of Balmer series lie in visible region
• C. All the lines of Paschen series lie in infrared region
• D. None of the above

Answer 1

Answer: (A), (B), (C)

All the lines of Lyman series lie in ultraviolet region
All the lines of Paschen series lie in infrared region
All the lines of Balmer series lie in visible region

As per the data shown in the figure, and the wavelenghts that can be determined using the Rydberg formula, the correct ans. can be obtained
$\frac{1}{\lambda }=Z^{2}R(\frac{1}{n_1^2}-\frac{1}{n_2^2})$