What term defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom?
A) Isotope number
B) Mass number
C) Mass-to-charge ratio
D) Atomic number
E) Atomic mass unit

Question

Quizplus · Accepted Answer

The term that defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom is atomic mass unit (amu). This is defined as 1/12th of the mass of a carbon-12 atom. Therefore, choice E, atomic mass unit, is the correct answer.

What Term Defines a Mass Which Is Exactly Equal to 1/12