Which of the following is true of the atomic weight of an element?
A) It is the weight of heaviest isotope.
B) It is the weight lightest isotope.
C) It is the weight of the most abundant isotope.
D) It is a weighted average obtained from the weights and abundances of the isotopes.

Question

Quizplus · Accepted Answer

The atomic weight of an element is a weighted average obtained from the weights and abundances of the isotopes. This is because most elements have more than one naturally occurring isotope, each with a different weight and abundance. The atomic weight takes into account these variations in isotopes and their abundances to provide a standardized value for the element's weight.

Which of the Following Is True of the Atomic Weight