What is the longest wavelength in the Lyman series of hydrogen?
A)122 nm
B)312 nm
C)415 nm
D)535 nm

Question

Quizplus · Accepted Answer

The Lyman series of hydrogen involves transitions starting from the ground state (n=1). The longest wavelength in this series corresponds to the transition from n=2 to n=1, and this is given by the formula 1/λ=R(1/1^2−1/2^2), where R is the Rydberg constant. Plugging in the values, we get λ=122 nm. Therefore, the correct choice is A.

What Is the Longest Wavelength in the Lyman Series of Hydrogen