The system of atomic mass units is based on A)assigning ¹²C as weighing exactly 12 u & comparing other elements to it. B)measuring the true mass of each subatomic particle. C)comparing the differences in protons and electrons. D)viewing how atoms are affected by electromagnetic fields.

Question

Quizplus · Accepted Answer

The system of atomic mass units is based on assigning carbon-12 (written symbolically in the question as ¹²C, which seems to be a typographical error) as weighing exactly 12 atomic mass units (u) and comparing the masses of other elements to it. This provides a standard reference for measuring atomic masses.

The System of Atomic Mass Units Is Based on