Question

What is the mass of a positron?

Answer 1

Electron:

• It is a subatomic particle and is negatively charged species.
• The symbol of an electron is represented as ${\mathrm{e}}^{-}$.

Positron:

• It is an antiparticle of the electron.
• The charge on the positron is opposite of the electron i.e., positive but the mass of positron is same as the mass of electron.
• The symbol of the positron is represented as ${\mathrm{e}}^{+}$.
• As we know that the mass of electron$=9.109\times {10}^{-31}\mathrm{Kg}$
• So, the mass of positron is also $=9.109\times {10}^{-31}\mathrm{Kg}$

Therefore, the mass of the positron is $\mathbf{9}\mathbf{.}\mathbf{109}\mathbf{\times }{\mathbf{10}}^{\mathbf{-}\mathbf{31}}\mathbf{}\mathbf{Kg}$.