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Radon-222, or 222Rn.

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How many protons does Rn have?

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.


Element francium has how many protons and neutrons?

Francium has 87 protons; the number of neutrons is different for each isotope and francium has approx. 40 isotopes and isomers. Number of neutrons = Atomic mass of the isotope - 87


Is there any element which has 86 protons and 136 neutrons?

The chemical element, Radon, has an atomic number of 86, meaning it has 86 protons. Were there an isotope of Radon that had 136 neutrons, it would be labeled as 222Rn. Well, it turns out that this isotope does exist and has a half-life of 3.82 days.


How many electrons are in francium?

The atomic number of francium is 87. This means that it has 87 each of protons and electrons. The number of neutrons depends on the isotope, but the most common one, Fr-223, has 223 - 87 = 136 neutrons. (The number of neutrons is always the isotope mass number minus the atomic number.)


What in a francium nucleus?

The most stable francium isotope (Fr-223) has 87 protons and 136 neutrons.


How many protons neutrons and electrons are in Francium?

Francium has 87 protons and electrons; the number of neutrons is different for each isotope and francium has ca. 40 isotopes ad isomers. Number of neutrons = Atomic mass of the isotope - 87


How many protons and neutrons in francium?

Francium has 87 positively charged protons and 87 negatively charged electrons, plus a varying number of uncharged neutrons, of which 136 is the commonest amount. Number of neutrons = Atomic mass of the isotope - 87


What is the number of subatomic particles in francium?

Californium has 98 electrons and 98 protons; the number of neutrons is different for each isotope of Cf.


How many protons and neutrons does polonium have?

The more stable polonium atoms have 125 neutrons. As with other elements, polonium atoms can have varying numbers of isotopes (variants with different number of neutrons).Polonium has 33 isotopes ranging from 104 to 136 neutrons.


How many protons neutrons and electrons are in radium 222?

Radon has 86 protons, 86 electrons.Rn-222 isotope has 136 (222 - 86 = 136) neutrons


What is the ratio of neutrons to protons in a nucleus of radon 222?

The ratio of neutrons to protons in a nucleus of radon-222 can be calculated by subtracting the atomic number from the mass number. For radon-222, the atomic number is 86 and the mass number is 222. Therefore, the ratio of neutrons to protons in radon-222 is 222 - 86 = 136 neutrons to 86 protons.


How many protons electrons and neutrons dose americium have?

There are 19 known isotopes of americium, with neutron counts ranging from 136 to 154. Americium-241, the easiest to produce, has 146 neutrons. Number of neutrons = Atomic weight (rounded) of an americium isotope - 95 Each isotope has a different number of neutrons. Americium has also 95 protons and electrons.