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Question

What does the abbreviation amu stand for?


A

Atomic molecular unit

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B

Atomic mass unit

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C

Atomic mole unit

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D

Atomic measuring unit

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Solution

The correct option is B

Atomic mass unit


According to IUPAC recommendations, mass of the atom is expressed as atomic mass unit (amu) or unified atomic mass unit (u). 1 amu is defined as one-twelth the mass of a carbon-12 atom.


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