The wave lengths of first member of Balmer series of a hydrogen atom is nearly (The value Rydberg constant is `1.08 xx 10^(7)m^(-1)`)

Options

A. `4400 A^@`
B. `5500 A^@`
C. `6600 A^@`
D. `7700 A^@`

Answer

C

Explanation

`1/(lambda)= barv = R ( 1/(n_1^2) - 1/(n_2^2)) n_1 , n_2 = 3`