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Ununpentium Facts

Chemical & Physical Properties

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Ununpentium is a radioactive man-made element.

Ununpentium is a radioactive man-made element.

Architetto Francesco Rollandin, openclipart.org
Periodic Table of the Elements

Ununpentium (Eka-Bismuth)

Symbol: Uup

Atomic Number: 115

Element Classification: Metal

Name Origin: Un (one) un (one) pent (five)

Discovery: Yuri Oganessian et al., Joint Institute of Nuclear Research in Dubna, Russia (2004).

Electron Configuration: [Rn] 5f14 6d10 7s2 7p3 (based on bismuth)

Source: Scientists used a cyclotron to fire a rare calcium isotope at an americium target. Element 115 (temporarily named unupentium) was created when the calcium and americium nuclei fused. The unupentium persisted for less than one-tenth of a second before decaying into element 113 (ununtrium), which persisted for over a second.

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