2020 · Q24
Which one of the following is the average atomic mass of chlorine atom?
general-sciencechemistry
- A35.9 u
- B35.5 u
- C35.0 u
- D37.0 u
Explanation
Natural chlorine is roughly 75% chlorine-35 and 25% chlorine-37, giving a weighted average atomic mass of about 35.5 u. The other listed values do not match this isotopic weighted mean.