Subatomic Constants & Avogadro

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Last updated 10:13 PM on 7/12/26
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6 Terms

1
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1.67262192 x 10^-24 g

Mass of a Proton (Full precise value in grams)

2
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1.67492749 x 10^-24 g

Mass of a Neutron (Full precise value in grams)

3
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9.10938370 x 10^-28 g

Mass of an Electron (Full precise value in grams)

4
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6.02214076 x 10^23 particles/mol

Avogadro's Number (N_A) - Exact SI definition standard

5
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1.66053907 x 10^-24 g

Value of exactly 1 Atomic Mass Unit (amu) in grams (Full precise value)

6
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1/12 the mass of Carbon-12

The structural reference standard definition for 1 Atomic Mass Unit (amu)