In Bohr series of lines of hydrogen spectrum, third line from the red end corresponds to which one of the following inner orbit jumps of electron for Bohr orbit in atom in hydrogen :

Options

A. `5 to 2`
B. `4 to 1`
C. ` 2 to 5 `
D. `3 to 2`

Answer

A

Explanation

The lines falling in the visible region comprise Balmer series. Hence the third line would be ` n _ 1 = 2, n _ 2 = 5 ` i.e., ` 5 to 2 `.