Question

Which statement about subatomic particles is true?
A. Protons, neutrons, and electrons all have about the same mass.
B. Unlike protons or neutrons, electrons have no mass.
C. Neutrons have no charge and no mass.
D. An electron has far less mass than either a proton or neutron.

Answer 1

i chose a

Answer 2

Electrons have the smallest mass of any subatomic particle
Protons and electrons have exactly opposite charges
Protons and neutrons have approximately the same mass
They can have antiparticles
They have magnetic and electric properties
They have a lifetime
They have a spin.