According to Bohr's theory of the hydrogen atom , the speed `v_(n)` of the electron in a stationary orbit is related to the principal quantum number `n`as (C is a constant):

Options

A. `v_(n)=C//n^(2)`
B. `v_(n)=C//n`
C. `v_(n)=Cxxn`
D. `v_(n)=Cxxn^(n)`

Answer

B

Explanation

Velocity of an electron is given by
`V=e^(2)/(2"in"_(0)h)-z/n=(cz)/n=c/n`(`therefore` for H-atom Z=1)