A highly radioactive metal, of which only a few atoms have ever been made. At present, it is only used in research.

Element 115 was the first superheavy element with an odd atomic number (Z) that we synthesized in nuclear reactions using a beam of accelerated ⁴⁸Ca ions. These experiments were carried out in 2003, on the heels of the first results obtained for even elements 114 and 116.

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