Question

which are the fundamental particles whose masses are mainly responsible for the mass of an atom? ​

Answer 1

Answer:

please mark me as the brainliest

Explanation:

Protons and neutrons have nearly equal masses, but they differ in charge. A neutron has no charge, whereas a proton has a positive charge that exactly balances the negative charge on an electron. Table 1 lists the charges of these three fundamental particles, and gives their masses expressed in atomic mass units.