electron

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electronsearch for term: A fundamental subatomic particle that carries a negative electric charge. It participates in electromagnetic interactions, and its mass is less than one thousandth of that of the smallest atom. Its electric charge is defined by convention to be negative, with a value of −1 in atomic units. Together with atomic nuclei (protons and neutrons), electrons make up atoms; their interaction with adjacent nuclei is the main cause of chemical bonding.