How many unstable isotopes does roentgenium have?
One
Three
Multiple
None
Answer
Roentgenium is a synthetic element that has been created in a lab, but has not yet been found in nature. It has several unstable isotopes, meaning that they are not stable and will eventually decay into other elements. The most stable isotope of roentgenium is 280Rg, which has a half-life of about 1.5 seconds. Other isotopes of roentgenium have half-lives that are shorter than a second.
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