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It is unknown if elements beyond 218 are possible, as atoms get extremely unstable as its atomic number increases, and the periodic table may even end soon after the island of stability. Elements beyond biunoctium are listed here.

219Edit

219
219
The electron shell of 219
Appearance
unknown
Transaktinoid
Chemical properties
Name, symbol, number: 219, 219, 219
Element category: alkali metal
Group, period, block: 1, 10, s
Standard atomic weight: [626][1]
Electron configuration: [218] 10s1


2,8,18,32,50,50,32,18,8,1
[1]

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

'219, also known as biunennium, eka-unhexennium or element 219, is the temporary name of a hypothetical superheavy chemical element in the periodic table that has the temporary symbol 219 and has the atomic number 219. In the periodic table of elements, it is a s-block element and the first one of the 10th period. As of 2016, no attempt has been made to synthesize this element. It is predicted to be an alkali metal.

HistoryEdit

Currently, 219 goes under a systematic temporary element name.

Extrapolated chemical propertiesEdit

Biunennium is a superheavy element, therefore it has a very large atom which is significantly radioactive. Since it is very far in the periodic table and has never been synthesized, very little is known about this element.

Taking the position in the periodic table as an alkali metal, it is predicted to be a heavier homologue to the lighter ones.

NamingEdit

Biunennium is a temporary IUPAC systematic element name derived from the digits 219. Research scientists usually refer to the element simply as 219.

ReferencesEdit




















220Edit

220
220
The electron shell of 220
Appearance
unknown
Transaktinoid
Chemical properties
Name, symbol, number: 220, 220, 220
Element category: alkaline earth metal
Group, period, block: 2, 10, s
Standard atomic weight: [628][1]
Electron configuration: [218] 10s2


2,8,18,32,50,50,32,18,8,2
[1]

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

220, also known as bibinilium, eka-unseptnilium or element 220, is the temporary name of a hypothetical superheavy chemical element in the periodic table that has the temporary symbol 220 and has the atomic number 220. In the periodic table of elements, it is a s-block element and the second one of the 10th period. As of 2016, no attempt has been made to synthesize this element. It is predicted to be an alkaline earth metal.

NamingEdit

Bibinilium is a temporary IUPAC systematic element name derived from the digits 220. Research scientists usually refer to the element simply as 220.

ReferencesEdit


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