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Meave60
Apr 25, 2015

The electron is the least massive of the three subatomic particles making up an atom, having a mass of #9.1093897xx10^(-31) "kg"#. Electrons are negatively charged and located in the electron cloud surrounding the atomic nucleus.

The neutron is the most massive of the subatomic particles making up an atom, having a mass of #1.6749286xx10^(-27) "kg"#, making it about 1839 times more massive than the electron. Neutrons are neutral, having no charge, and are located in the atomic nucleus.

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