Hydrogen atom emits blue light when it changes from `n = 4` energy level to the `n = 2` level. Which
Channel: Doubtnut
Date: 2020-01-19

Hydrogen atom emits blue light when it changes from `n = 4` energy level to the `n = 2` level. Which colour of light would te atom emit when it changes from the `n = 5` level to the `n = 2` level ?