The isotope 210Rn has 86 protons and electrons; also 124 neutrons.
Radon has 86 protons and electrons; the number of neutrons is different for each isotope: Number of neutrons = Atomic mass of the Rn isotope - 86
Radon has 86 electrons and protons; the number of neutrons is specific for each isotope. Number of neutrons in a radon isotope = Mass number - 86
The number of neutrons is different for each isotope: Number of neutrons = Atomic mass of the isotope - 86 The isotope 222Rn, the most stable (half life = 3,8 days) radon isotope, has 136 neutrons.
210 total combined
The atomic number is 86 which gives the number of protons. 220Rn has 220 protons and neutrons so the neutron count iscalcualted as follows: 220 -86 = 134 neutrons 220Rn is an unstable isotope of Radon.
16 protons 20 neutrons
The C-12 isotope has 6 protons and 6 neutrons.
The carbon-12 isotope has 6 protons and 6 neutrons. This isotope is the most stable and abundant form of carbon.
Promethium has 61 protons and electrons.For each isotope the number of neutrons is different. Number of neutrons = Mass number of an isotope - 61
6 protons. The number of neutrons varies, but the most common isotope has 6 neutrons.
In the most abundant isotope of iron, there are 26 protons and 26 neutrons.
Actinium has 89 protons and 138 neutrons (the natural isotope 227Ac).