Science Constants   Name Elementary Charge     Symbol e     Value 1.602 176 462 ± 0.000 000 063 × 10−19 C     Category General Physical Constants     Comments   The elementary charge is equal to the magnitude of the charge on an electron, and equal to the charge of a proton. The charge on all atomic particles is a whole number of elementary charges. Quarks have charges equal to fractions of the elementary charge.     References The CRC Handbook of Chemistry and Physics, 81st edition, 2000-2001

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