The ratio of minimum to maximum wavelength in Balmer series is

Options

A. `5:9`
B. `5:36`
C. `1:4`
D. `3:4`

Answer

A

Explanation

`(1)/(lambda_("max"))=R[(1)/(2^(2))-(1)/(3^(2))]=(5R)/(36)`
`(1)/(lambda_("mix"))=R[(1)/(2^(2))-(1)/(oo)]=(R)/(4)rArr (lambda_("min"))/(lambda_("max"))=(5R)/(36)xx(4)/(R )=(5)/(9)`