Question

An electron in an atom revolves around the nucleus in an orbit of radius `0*5 Å`. Calculate the equivalent magnetic moment if the frequency of revolution of electron is `10^(10)MHz`

Answer 1

Revolving electron is equivalent to a current loop. Its magnetic moment is
`M=NIA=1 * (ev)pir^2`
`=(1*6xx10^(-19)xx10^(16))3*14(0*5xx10^(-10))^2`
`=1*256xx10^(-23)Am^2`