Question

Differentiate the mass of proton and electron and write their representation.

Answer 1

Hint: The mass of proton and electron is defined in kg quantity. Proton to electron mass ratio comes 1836. The initial letter of the name is used to represent the proton and electron with the mass number and charge number.

Complete step by step answer:
Proton is discovered by Ernest Rutherford during the gold foil experiment. The mass of a proton is $1.6726 \times {10^ {- 27}} {\text{kg}}$. The proton is the positively charged particle. The charge equals $1.602 \times {10^ {- 19}} $ coulomb.

Electrons were discovered by J.J Thomson during the cathode ray tube experiment. The mass of an electron is $9.1093 \times {10^ {- 31}} {\text{kg}}$. The electron is the negatively charged particle. The charge equals $1.602 \times {10^ {- 19}} $ coulomb.

The proton is represented by ${\text {p}} $ or ${{\text {p}} ^ {\text {+}}} $. The superscript represents the charge of the proton that is $ + 1$.

The electron is represented by $e^{-}$. The superscript represents the charge of the electron that is $ - 1$.

The proton to electron mass ratio is given as follows:
\[\dfrac{{{m_p}}}{{{m_e}}}\, = \,\dfrac{{1.6726 \times {{10} ^ {- 27}}\,{\text{kg}}}}{{9.1093 \times {{10} ^ {- 31}}\, {\text{kg}}}}\]
Where,
${m_p} $ is the mass of the proton.
${m_e} $ is the mass of the electron.
\[\dfrac{{{m_p}}}{{{m_e}}}\, = \, 1836\]

So, the mass of the proton is $1836$ times more than the mass of the electron.Therefore the ratio of the proton to the electron is $1836$ and the representation of proton and electron is ${\text{p}}$ or ${{\text{p}}^{\text{ + }}}$ and \[{{\text{e}}^ - }\] or \[{{{\beta }}^ - }\] respectively.

Additional information: Protons and electrons are the subatomic particles of an atom. Another particle is a neutron that has the same mass as a proton that is $1.6726 \times {10^{ - 27}}{\text{kg}}$. As the name indicates the neutron is neutral means it has no charge.

Note:
The neutron also has the same mass as the proton but the neutron is a different subatomic particle. Both proton and neutron constitute the nucleus of an atom and electrons found in orbit outside of the nucleus.