Question

Arrange the following particles in increasing order of values of $e/m$ ratio : electron $(e)$, proton $(p)$, neutron $(n)$ and a-particle $(\alpha)$ -

• A. $n, p, e, \alpha$
• B. $n, \alpha, p, e$
• C. $n, p, \alpha, e$
• D. $e, p, n, \alpha$

Answer 1

Answer: (B)

	Electron	Proton	Neutron	$\alpha$ -particle
e	1 unit	1 unit	zero	2 unit
m	1/1837 unit	1 unit	1 unit	4-unit
e/m	1837	1	zero	1/2