Which of the following statements is true concerning the masses of individual Cl atoms?
A)All atoms have a mass of 35.45 u.
B)Most of the atoms have a mass of 35.45 u.
C)Some of the atoms have a mass of 35.45 u.
D)None of the atoms have a mass of 35.45 u.
E)All atoms have a mass of 17 u.

Question

Quizplus · Accepted Answer

The atomic mass of chlorine (Cl) is approximately 35.45 atomic mass units (u), but this is an average of the masses of its isotopes, primarily Cl-35 and Cl-37. No individual chlorine atom has a mass of exactly 35.45 u; this value is an average reflecting the natural abundance of its isotopes.

Which of the Following Statements Is True Concerning the Masses