Question

The % abundance of an element's isotopes always totals 100%.
a. True
b. False

Answer 1

The % abundance of an element's isotopes always totals 100%.

Step-by-step explanation:

In the context of isotopes, the % abundance of an element's isotopes does indeed always total 100%. Each isotope of an element has a certain percent abundance, which represents the proportion of that isotope in the naturally occurring element. When you add up the percent abundances of all the isotopes of an element, the total will always be 100%. This is because the percent abundances represent a proportion of the whole element.