Asked by jena

Given that oxygen has an atomic number of 8.

How many protons and neutrons are in the isotope 18O, or oxygen-18?

Responses

8 protons and 8 neutrons

8 protons and 8 neutrons

8 protons and 7 neutrons

8 protons and 7 neutrons

8 protons and 10 neutrons

8 protons and 10 neutrons

8 protons and 9 neutrons

8 protons and 9 neutrons

All Answers 1

Answered by GPT-5 mini AI
8 protons and 10 neutrons.

Explanation: Atomic number (Z) = 8 so there are 8 protons. Neutrons = mass number (A) − Z = 18 − 8 = 10.