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Nearly 100% of all strontium found in nature is not radioactive. There are traces of radioactive strontium-90 found in nature, but only traces. Like all elements, strontium has radioactive synthetic isotopes.
Nitrogen, Oxygen, Helium, Argon, traces of Krypton and traces of Xenon
Saturn is approximately 75% hydrogen and 25% helium with traces of other substances like methane and water ice.The composition of Saturn's atmosphere is that it contains mainly hydrogen and some helium.
This depends on the preparation method and the quality of helium; generally traces of oxygen, nitrogen other noble gases.
A radioactive rock is one which contains traces of radioactive isotopes. These isotopes release radiation in its various forms. Any rock can be radioactive, but in particular igneous rocks tend to have radioactive properties. This is because they may have radon gas trapped in their crystals, which, under pressure, is released (this is why radon gas is used as an indicator of an upcoming earthquake). Radon gas is radioactive, and this causes the rock to be radioactive also.
False. All matter, including living matter, contains traces of radioactive isotopes.
Nearly 100% of all strontium found in nature is not radioactive. There are traces of radioactive strontium-90 found in nature, but only traces. Like all elements, strontium has radioactive synthetic isotopes.
Helium is a gas. It is found in traces in the Earth's atmosphere.
The atmosphere on Neptune contains helium and hydrogen with some traces of water, methane and ammonia. The atmosphere is similar to the large planets of the Solar System, but has a larger proportion of ice.
Nitrogen, Oxygen, Helium, Argon, traces of Krypton and traces of Xenon
Saturn is approximately 75% hydrogen and 25% helium with traces of other substances like methane and water ice.The composition of Saturn's atmosphere is that it contains mainly hydrogen and some helium.
Hydrogen, helium, nitrogen, oxygen, fluorine, neon, chlorine, argon, xenon, and krypton are all gasses are usually found in nonradioactive isotopes. Hydrogen, chlorine, argon, and krypton have at least traces of naturally occurring radioactive isotopes, however.
This depends on the preparation method and the quality of helium; generally traces of oxygen, nitrogen other noble gases.
All isotopes of polonium (all 25 of them) are radioactive. Only traces of a single isotope exist in nature.
About 75% hydrogen and 25% helium, with some traces of heavier elements.
About 75% hydrogen and 25% helium, with some traces of heavier elements.
There are over twenty known isotopes of argon. Of these all but three are radioactive and decay. Of naturally occurring argon, very nearly 100% is not radioactive, with only traces of one radioactive isotope found.