Question

Which among the following pairs of subatomic particles approximately have the same mass?

• A. Electrons and neutrons
• B. Protons and electrons
• C. Protons and neutrons
• D. Electrons and nucleons

Answer 1

The correct option is C Protons and neutrons

The masses of the subatomic particles are given below -

$$\begin{array}{cc}\text{Subatomic particle}& \text{Mass (kg)}\\ \text{Proton}& \text{1.673}\times {10}^{-27}\\ \text{Neutron}& \text{1.675}\times {10}^{-27}\\ \text{Electron}& \text{9.11}\times {10}^{-31}\end{array}$$
The mass of a proton is nearly same as the mass of a neutron, whereas the mass of an electron is nearly $\frac{1}{1836}$ times that of the proton.