The increasing order (lowest first) for the values of `e//m` (charge//mass) for electron `(e)`, proton `(p)`, neutron `(n)`, and alpha particle `(alpha)` is

Options

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

Answer

A

Explanation

(i)e/m for neutron =`0/2`=0
(ii)e/m for `alpha` particle =`2/4` =0.5
(iii)e/m for proton =`1/1`=1
(iv)e/m for electron =`1/(1//1837)=1837`