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atomic unit of permittivity  Numerical value  1.112 650 056 20 x 10-10 F m-1  Standard uncertainty  0.000 000 000 17 x 10-10 F m-1   Relative standard uncertainty  1.6 x 10-10  Concise form  1.112 650 056 20(17) x 10-10 F m-1       Click here for correlation coefficient of this constant with other constants Source: 2022 CODATA      recommended values  Definition of uncertainty       Correlation coefficient with any other constant