The increasing order of e/m values for electron, proton, neutron and alpha particle is

Options

A. e, p, n, `alpha`
B. `n, p , e alpha`
C. `n, p , alpha , e`
D. `n , alpha , p , e`

Answer

D

Explanation

e/m of neutron is 0
e/m of alpha is 2/4 times of proton
e/m of electron is highest as mass is low