The electron shell of biunhexium
Chemical properties
Name, symbol, number: biunhexium, Buh, 216
Element category: unknown (possible chalcogen)
Group, period, block: 16, 9, p
Standard atomic weight: [597][1]
Electron configuration: [Uho] 6g187f148d109p4


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

Biunhexium, also known as eka-unhexhexium or element 216, is the temporary name of a hypothetical superheavy chemical element in the periodic table that has the temporary symbol Buh and has the atomic number 216. In the periodic table of elements, it is a p-block element and the third last one of the 9th period. As of 2012, no attempt has been made to synthesize this element. It is predicted to be a chalcogen.


Currently, biunhexium goes under a systematic temporary element name. It is the third heaviest element predicted, with the third most protons. 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.


Biunhexium is a temporary IUPAC systematic element name derived from the digits 216. Research scientists usually refer to the element simply as element 216.


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