Question

Which of the following is true about subatomic particles?

The mass of a neutron is equal to the mass of a proton


Neutrons have no charge and are the lightest subatomic particle


Electrons are negatively charged and are the heaviest subatomic particle


Protons are positively charged and the lightest subatomic particle

Answer 1

Neutrons have no charge and are the lightest subatomic particle

Step-by-step explanation:

Nucleus of an atom contains three subatomic particles. These are protons, neutrons and electrons.

Mass of a proton is
`1.67`×
`10^(-27)`kg.

Mass of a neutron is
`1.67`×
`10^(-27)`kg.

Mass of an electron is
`9.1`×
`10^(-31)` kg.

Also, protons are positively charged, neutrons have no charge and electrons are negatively charged.

Therefore, we can conclude that the mass of a neutron nearly equals the mass of a proton.