Question
Which is true about the average atomic mass of any element? It's equal to the mass of the least common isotope. It's equal to the mass of the most common isotope. It's closest to the mass of the most common isotope. It's closest to the mass of the least common isotope.
Answer
4.4
(183 Votes)
Rosie
Professional · Tutor for 6 years
Answer
### C. It's closest to the mass of the most common isotope.
Explanation
## Step1: Define the Concept of Average Atomic Mass### The average atomic mass of an element is a weighted average of the masses of its isotopes, based on their natural abundance.## Step2: Analyze the Given Options### Evaluate each option to determine which one accurately describes the relationship between average atomic mass and isotopic masses.## Step3: Determine the Correct Option### The average atomic mass is closest to the mass of the most common isotope because it has the highest natural abundance, thus contributing more to the weighted average.