Herselium is a hypothetical element with the symbol Hel and the atomic number 2162. It is named after Hersel. Like all elements after lead(excluding anomalies), Herselium has no stable isotopes. Its most stable isotope is 9893Hsl. It is not found in nature and it can only be created inside a laboratory.Herselium has a half-life of about 0.009 seconds.
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