The<unk>  is a fundamental subatomic particle that carries a negative electric charge. It is a spin ½ lepton that participates in<unk> agnetic interactions, and its mass is approximately 
1
/
1836
{\displaystyle 1/1836}
 of that of the proton. Together with atomic nuclei, which consist of protons and neutrons,<unk> s make up atoms. Their interaction with adjacent nuclei is the main cause of chemical bonding.
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