Test Index

VITEEE 2019 Paper

Section: Chemistry

Question : 43 of 125

Marks: +1, -0

Solution:

Increasing order (lowest first) for the values of e\/m (charge \/ mass) for electron (e), proton (p), neutron (n) and

\alpha

-particle

(\alpha) \text{ is } n, \alpha, p, e

\frac{e}{m}

for neutron

=\frac{0}{1}=0

\frac{e}{m}

for alpha particle

=\frac{2}{4}=0.5

/ m

for proton

=\frac{1}{1}=1

\frac{e}{m}

for electron

=\frac{1}{\left(\frac{1}{1850}\right)}=1850

Note:

e

is the charge of the particle,

m

is the mass of a particle and the mass of an electron is

\frac{1}{1850}

times the mass of proton.

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