Oxygen has an atomic number of 8 and a mass number of 16. Thus, the atomic mass of an oxygen atom is
A)exactly 8 grams.
B)exactly 8 daltons.
C)approximately 16 grams.
D)approximately 16 daltons.
E)24 amu (atomic mass units).

Question

Quizplus · Accepted Answer

The atomic mass of an atom is approximately equal to its mass number. Oxygen has a mass number of 16, so its atomic mass is approximately 16 daltons.

Oxygen Has an Atomic Number of 8 and a Mass