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Click symbol for equation electron volt  Value  1.602 176 487 x 10-19 J  Standard uncertainty  0.000 000 040 x 10-19 J   Relative standard uncertainty   2.5 x 10-8  Concise form  1.602 176 487(40) x 10-19 J       Click here for correlation coefficient of this constant with other constants Source: 2006 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant     or