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10 points
NEGATRONS is validvalid
NEGATRON, an electron [n]
NEGATRON, a hypothetical atomic particle with mass equal to that of a proton, but with a negative charge equal to that of an electron, also NEGATON [n]
NEGATRON, an electron [n]
NEGATRON, a hypothetical atomic particle with mass equal to that of a proton, but with a negative charge equal to that of an electron, also NEGATON [n]