Question

Name the three constituents of an atom and state mass and charge of each. How are they distributed in an atom?

Answer 1

The protons and neutrons are inside the nucleus of the atom which is at its centre, while the electrons revolve around the nucleus in specific orbits known as stationary orbits.
Subatomic particles

Particle	Mass(kg)	Charge (C)
Proton	$1.672\times {10}^{-27}$	$+1.6\times {10}^{-19}$
Neutron	$1.674\times {10}^{-27}$	0
Electron	$9.109\times {10}^{-31}$	$-1.6\times {10}^{-19}$