8
An atom of oxygen typically has 8 protons, 8 neutrons, and 8 electrons, giving it a mass number of 16. Oxygen-18, on the other hand, has 8 protons and 10 neutrons, totaling a mass number of 18.
O-18 atom has 8 protons, 8 electrons and 10 neutrons.
Because the world is made up like this. Well, a 18O, as it's name shows, has a releatve mass of 18 units. A proton has got a mass of 1 ,a neutron ahd got a mass of 1, and electron has gor a amss of 1/1840 (we dont calculate with a this small mass). So in a 18 relative mass, neutrons + protons = 18. As oxygen is the 8th in the periodic table, it has got 8 atoms. So neutrons + 8 = 18, where neutrons = 10.
The mass number =18
The atomic number of oxygen is 8. So it has 8 protons. And O-18 isotope has 10 neutrons.
The main difference between an oxygen-16 atom and an oxygen-18 atom is their atomic mass. Oxygen-16 has 8 protons, 8 neutrons, and 8 electrons, while oxygen-18 has 8 protons, 10 neutrons, and 8 electrons. This difference in neutron number gives them different atomic masses and slightly different chemical behaviors.
2 extra neutrons
An atom of oxygen-18 has 10 neutrons. This is calculated by subtracting the atomic number (8) from the atomic mass (18).
An oxygen atom with 10 neutrons would have a mass number of 17 (8 protons + 10 neutrons) and isotope oxygen-17. This isotope is a rare form of oxygen and differs from the more common oxygen-16 isotope in having two extra neutrons.
An atom of oxygen typically has 8 protons, 8 neutrons, and 8 electrons, giving it a mass number of 16. Oxygen-18, on the other hand, has 8 protons and 10 neutrons, totaling a mass number of 18.
A neutral oxygen atom usually has 8 protons and 8 electrons. In oxygen-18 isotope, the number of protons remain the same (8), but the number of neutrons is increased to 10, making it oxygen-18. So, a neutral oxygen-18 atom would still have 8 electrons.
O-18 atom has 8 protons, 8 electrons and 10 neutrons.
The isotope oxygen-18 has the mass number of 18. The atomic number of oxygen is 8, so all of its atoms, regardless of isotope, have 8 protons. In a neutral oxygen atom the number of protons equals the number of electrons, so it has 8 electrons. The number of neutrons equals the mass number minus the atomic number, which for oxygen-18 is (18 - 8), so there are 10 neutrons.
18
No, the number of neutrons in an oxygen atom can vary, but the most common isotope of oxygen, oxygen-16, contains 8 neutrons. Isotopes of oxygen with different numbers of neutrons exist, such as oxygen-17 and oxygen-18.
The mass number for oxygen-18 is 18. This is calculated by adding together the number of protons and neutrons in the nucleus of an oxygen-18 atom. It is a stable isotope of oxygen with 8 protons and 10 neutrons.
Because the world is made up like this. Well, a 18O, as it's name shows, has a releatve mass of 18 units. A proton has got a mass of 1 ,a neutron ahd got a mass of 1, and electron has gor a amss of 1/1840 (we dont calculate with a this small mass). So in a 18 relative mass, neutrons + protons = 18. As oxygen is the 8th in the periodic table, it has got 8 atoms. So neutrons + 8 = 18, where neutrons = 10.