Fluorine (18.994-9=10 neutrons
) and Neon (20.180-10=10 neutrons)
Number of neutrons = Atomic mass - Atomic number So Fluorine = 19- 9 = 10 and Neon = 20-10 = 10 :)
10 protons, 12 neutrons
Oxygen-18, fluorine-19 and neon-20 atoms have 10 neutrons each.
All oxygen atoms contain 8 protons in their nuclei. All neutral oxygen atoms have 8 electrons. There are three isotopes of oxygen, containing 8,9, or 10 neutrons in their nuclei.
All oxygen atoms contain 8 protons in their nuclei. All neutral oxygen atoms have 8 electrons. There are three isotopes of oxygen, containing 8,9, or 10 neutrons in their nuclei.
(Explanation): remember that if an atom has less than 20 protons, the closer the number of neutrons and protons are, the more stable it is. Since 10 is closest to 12 out of these options, D is the correct answer.
Oxigen has 8 protons; natural isotopes have 8, 9 an 10 neutrons.
Neutrons have no electric charge and have nearly 1,840 times the mass of the electron. Free neutrons undergo beta decay with a half-life of about 10 minutes. Thus, they are not readily found in nature, except in cosmic rays. They are a penetrating form of radiation. When bombarded with neutrons, various elements undergo nuclear fission and release more free neutrons. If enough free neutrons are produced, a chain reaction can be sustained.
Any atom, ion, or isotope with 12 protons is going to be magnesium. Only the number of protons in the nucleus will determine the element. But with the information about the number of neutrons, the specific isotope can also be determined - 22Mg.
Neon, and certain isomers of other elements.
An unstable mess called Neon-18, which has a half-life of under two seconds. To get the stable neon (neon-20) we've all come to love, you need 10 protons and 10 neutrons. Fusing an oxygen nucleus (8 of each) with two hydrogen nuclei (1 proton, no neutron) would create neon-18 which falls apart the second after you make it.
Neutrons have size (about 10-13 cm in diameter) and mass (1.6749 x 10-27 kg).