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Ununtrium Facts

Chemical & Physical Properties


Ununtrium is a radioactive man-made element.

Ununtrium is a radioactive man-made element.

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


Symbol: Uut

Atomic Number: 113

Element Classification: Metal

Phase: probably solid

Discovered By: Yuri Oganessian et al., Joint Institute of Nuclear Research in Dubna, Russia (2004). Confirmation in 2012 by Japan.

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.

Name Origin: Un (one) un (one) tri (three)

Electronic Configuration: [Rn] 5f14 6d10 7s2 7p1

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