Question

An atom has 8 protons and 8 neutrons. Which symbol represents that atom, including its mass number? A) 16o 16 B) o 19f 19 C) f 8o 8 D) o 9f 9

Answer 1

Oxygen (O) --> 8 protons - 16 (mass number) = 8 neutrons

8 protons = 8 electrons