Question

mass of an electron is​

Answer 1

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

Answer 2

Answer:

The rest mass of the electron is 9.1093837015 × 10−31 kg, which is only 1/1,836the mass of a proton.

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