Radon occurs from alpha decay of solid radium, that is, with the loss of two protons and two neutrons alpha particles are emitted. Felsic, igneous parent bed rock such as granite can contain trace amounts of radium. It is naturally occurring.
Radon, unless you count the synthetic Ununoctium. But because it is radioactive, highly unstable, and synthetic, I would discount it for now. It does however have the largest atomic mass for any known atomic substance. So, the answer is Radon.
The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes. The other isotopes are manmade. See also the link below.
Do you mean radon? If you do, Radon is a naturally occurring radioactive gas and comes from the natural breakdown (radioactive decay) of uranium.
Naturally occurring, Uranium. Synthetic, to be determined.
Gold-198 is not naturally occuring.
The radon isotopes 222Rn and 220Rn are natural isotopes.
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No, it is a naturally occurring element
The gas is Radon.
Synthetic
Radon, unless you count the synthetic Ununoctium. But because it is radioactive, highly unstable, and synthetic, I would discount it for now. It does however have the largest atomic mass for any known atomic substance. So, the answer is Radon.
Radon is a naturally occurring gas which in high concentrations can be extremely hazardous. So it it better to do the testing if you suspect the presence.
Radon is a naturally occurring odorless colorless radioactive gas that is emitted by the decay of uranium in the soil. It has no known industrial uses, and there is no need to synthesize it.
Radon is a naturally occurring element. It is a noble gas, and is highly unreactive. Radon is a poisonous gas and is the second most common reason people have lung cancer (behind smoking). Most radon comes from beneath the ground and as it rises up it can permeate through someone's home. This is why it is important to have radon detectors in geographical areas that have had a historically high concentration of radon.
Gold-198 is not naturally occuring.
No, gold is a naturally occurring mineral element.
The radon isotopes 218Rn, 219Rn, 220Rn and 222Rn are natural isotopes. The other isotopes are manmade. See also the link below.