Question

The electron is the most massive subatomic particle of the atomThe electron is the most massive subatomic particle of the atom. True or false

Answer 1

Answer:

The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton. An electron is therefore considered nearly massless in comparison with a proton or a neutron, and the electron mass is not included in calculating the mass number of an atom.