Question

Write the decreasing order of the $\frac{e}{m}$ values of neutron, electron and proton.

Answer 1

Neutron has no charge, hence e/m is zero for neutron, proton and electron have same charge (magnitude) but proton is heavier than electron, hence has smaller value of e/m than electron.

So the correct order of e/m is: $n<p<e$