Answer
The three subatomic particles that compose atoms are:
1. Proton
2. Electron
3. Neutron
Work Step by Step
The basic properties of each are as follows:
Proton :
Mass (kg) = $1.67262 \times 10^{-27}$ kg
Mass (amu) = $ 1.00727$ amu
Charge (relative) = $+1$
Charge (C) = $1.60218 \times 10^{-19}$ C
Electron:
Mass (kg) = $0.00091 \times 10^{-27}$ kg
Mass (amu) = $ 0.00055$ amu
Charge (relative) = $-1$
Charge (C) = $-1.60218 \times 10^{-19}$ C
Neutron:
Mass (kg) = $1.67493 \times 10^{-27}$ kg
Mass (amu) = $ 1.00866$ amu
Charge (relative) = $0$
Charge (C) = $0$ C
