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One-twelfth the mass of a carbon atom having six protons and six neutrons
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One-twelfth the mass of a carbon atom having six protons and six neutrons

User Merhoo
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1 Answer

3 votes

Answer:

Is one unified atomic mass unit (u)

Step-by-step explanation:

It is NOT an atomic mass unit (amu). That unit is obsolete. It was based on oxygen and was replaced in 1961.

User Alecxe
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