The change in the angular momentum of the electron when it jumps from the fourth orbit ot the first orbit in a H-atom is

Options

A. `3.167 xx 10^(-34) kg m^(2)//s`
B. `3.167 xx 10^(-20) kg m^(2)//s`
C. `3.167 xx 10^(-32) kg m^(2)//s`
D. `3.167 xx 10^(-30) kg m^(2)//s`

Answer

A

Explanation

`Iomega_(4)-Iomega_(1)=(3h)/(2pi)=(3xx6.63xx10^(-34))/(2xx3.14)`
`=3.167xx10^(-34)kg m^(2)//s`