Radium spontaneously decays into helium and radon. Why do you think radium is regarded as an element
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Radium spontaneously decays into helium and radon. Why do you think radium is regarded as an element rather than as a chemical compound of helium and radon in the way that water, for example, is considered a chemical compound of hydrogen and oxygen?
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Helium and radon cannot be ...View the full answer
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