The wave number of the spectral line in the emission spectrum of hydrogen will be equal to `(8)/(9)` times the Rydberg's constant if the electron jumps from …………..:-

Options

A. n = 3 to n = 1
B. n = 10 to n = 1
C. n = 9 to n = 1
D. n = 2 to n = 1

Answer

A

Explanation

`bar(v) =R_(H)[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]` For `n_(1) = 1` and `n_(2) = 3`
`bar(v) = R_(H) [(1)/(1^(2))-(1)/(3^(2))] = R_(H) xx 8//9`