Question

What does the abbreviation amu stand for?

• A. Atomic molecular unit
• B. Atomic mass unit
• C. Atomic mole unit
• D. Atomic measuring unit

Answer 1

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.