Answer the following questions without referring to Table 2.1:
(a) What are the main subatomic particles that make up the atom?
(b) What is the relative charge (in multiples of the electronic charge) of each of the particles?
(c) Which of the particles is the most massive?
(d) Which is the least massive?

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TABLE 2.1 Comparison of the Proton, Neutron, and Electron Charge Positive (1+) None (neutral) Negative (1- Particle Proton Neutron Electron Mass (amu) 1.0073 1.0087 5.486 x 10