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Click symbol for equation hartree-atomic mass unit relationship  Value  2.921 262 2986 x 10-8 u  Standard uncertainty  0.000 000 0042 x 10-8 u   Relative standard uncertainty   1.4 x 10-9  Concise form  2.921 262 2986(42) x 10-8 u       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