element 115

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Related to element 115: Element 116, Area 51

element 115:

see ununpentiumununpentium,
artificially produced radioactive chemical element; symbol Uup; at. no. 115; mass number of most stable isotope 288; m.p., b.p., sp. gr., and valence unknown.
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References in periodicals archive ?
The reason for this regional boom of sightings, the article revealed, was the night-blooming cereus cactus, which mutated an extra proton in its molecular structure to create a radical stable "element 115," the rumored fuel of alien spaceships.
The ancient site on which the castle sits was the scene of unspeakable horror where massive deposits of Element 115 have recently been discovered.
The isotope of element 117 that contains 176 neutrons, for instance, took 21 milliseconds to decay via alpha particle emission to element 115. The isotope with 177 neutrons stuck around longer, for 112 milliseconds.