The electron shell of unhexhexium
Chemical properties
Name, symbol, number: unhexhexium, Uhh, 166
Element category: unknown (possible chalcogen)
Group, period, block: 16, 8, p
Standard atomic weight: [442][1]
Electron configuration: [Uuo] 6f147d108p4


Phase: Unknown
Density (near r.t.): Unknown
Melting point: Unknown
Boiling point: Unknown
Oxidation states: Unknown
Atomic radius: Unknown
Discoverer None of as yet
Location discovered None of as yet
Date discovered None of as yet

Unhexhexium, also known as eka-livermorium or element 166, is the temporary name of a hypothetical superheavy chemical element in the periodic table that has the temporary symbol Uhh and has the atomic number 166. In the periodic table of elements, it is a p-block element and the third last one of the 8th period. As of 2012, no attempt has been made to synthesize this element. It is predicted to be a chalcogen.


Currently, unhexhexium goes under a systematic temporary element name. Since it is very far in the periodic table and has never been synthesized, very little is known about this element, and it is unknown whether a superheavy element like this could physically exist.


Unhexhexium is a temporary IUPAC systematic element name derived from the digits 166. Research scientists usually refer to the element simply as element 166.


Elements navigator

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.