Ionization energy of hydrogen is `13.6 eV`. If `h = 6.6 xx 10^(-34) J-s`, the value of `R` will of the order of

Options

A. `10^(10)m^(-1)`
B. `10^(7)m^(-1)`
C. `10^(4)m^(-1)`
D. `10^(-7)m^(-1)`

Answer

B

Explanation

`E =- Rch rArr = - (E)/(ch) = - (13.6 xx 1.6 xx 10^(-19))/(3 xx 10^(8) xx 6.6 xx 10^(-34))`
`= 1.098 xx 10^(7)` per m