Atoms are made up of subatomic particles. Which of the following
statements is true about subatomic particles? *
A) Electrons are negatively charged and are the heaviest subatomic particle.
B) Neutrons are completely responsible for the mass of the nucleus and have no charge.
C) The mass of a neutron nearly equals the mass of a proton.
D) Protons are positively charged and the lightest subatomic particle.
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