The electron shell of biunpentium
Chemical properties
Name, symbol, number: biunpentium, Bup, 215
Element category: unknown (possible pnictogen)
Group, period, block: 15, 9, p
Standard atomic weight: [593][1]
Electron configuration: [Uho] 6g187f148d109p3


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

Biunpentium, also known as eka-unhexpentium or element 215, is the temporary name of a hypothetical superheavy chemical element in the periodic table that has the temporary symbol Bup and has the atomic number 215. In the periodic table of elements, it is a p-block element. As of 2012, no attempt has been made to synthesize this element. It is predicted to be a pnictogen.


Currently, biunpentium 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.


Biunpentium is a temporary IUPAC systematic element name derived from the digits 215. Research scientists usually refer to the element simply as element 215.


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