Is helium is found in our atmosphere? if not then where it is found?
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helium gas is found in balloon
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helium make up about 0.0005% of the earth's atmosphere. this trace amounts of helium is not gravitationally bound to the earth and is constantly lost to space. The earth's atmosphereic helium is replaced by a decay of radioactive elements in the earth's crust. earth's atmosphere is only about 5 parts per million, or 0.0005 percent helium. As such, it's not economical to extract the gas of helium used in science and industry today comes from natural gas, where this element was first discovered in 1905.
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