An atom of Oxygen-17 (O-17) has 8 protons, 9 neutrons, and 8 electrons.
Here’s the explanation:
- Protons: The number of protons in an atom is determined by its atomic number. Oxygen has an atomic number of 8, which means it has 8 protons.
- Neutrons: The number of neutrons is calculated by subtracting the atomic number from the mass number. For O-17, the mass number is 17. So, 17 (mass number) – 8 (atomic number) = 9 neutrons.
- Electrons: In a neutral atom, the number of electrons is equal to the number of protons. Since O-17 has 8 protons, it also has 8 electrons.