Oxygen has an atomic number of 8. This means that oxygen has ____.
A) eight electrons in its outer most shell
B) eight neutrons in its nucleus
C) four protons and four neutrons in its nucleus
D) eight protons in its nucleus
E) eight protons and eight neutrons in its nucleus

Question

Quizplus · Accepted Answer

The atomic number of an element indicates the number of protons in its nucleus. Since oxygen has an atomic number of 8, it means it has eight protons in its nucleus.

Oxygen Has an Atomic Number of 8