Oxygen has an atomic number of 8 and, most commonly, a mass number of 16. Thus, what is the atomic mass of an oxygen atom?
A) approximately 8 grams
B) approximately 8 daltons
C) approximately 16 grams
D) approximately 16 daltons

Question

Quizplus · Accepted Answer

The atomic mass of an atom is roughly equal to its mass number, which for most oxygen atoms is 16. This is best expressed in daltons, a unit of mass used for atoms and molecules.

Oxygen Has an Atomic Number of 8 And, Most Commonly