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

According to Rydberg's formula
`bar(v)=R[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]Z^(2)`
if `bar(V)`=8/9R
then `n_(1)`should be 1
and `n_(2)` should be 3
value of z for H is 1 ltbgt ` bar (V)=R[1-(1)/(9)]`=8/9R