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History and
Discovery of the Ununoctium Element
The element was
discovered on July 19, 2000 by scientists working at the Joint
Institute for Nuclear Research in Dubna, Russia together with
scientists from the U.S. Department of Energy's Lawrence
Livermore National Laboratory. The scientists produced
ununoctium by bombarding atoms of californium-249 with ions of
calcium-48. This produced ununoctium-294, an isotope with a
half-life of about 0.89 milliseconds (0.00089 seconds), and
three free neutrons. The californium target was irradiated with
a total of 1.6*1019 calcium ions over the course of 1080 hours,
resulting in the production of three atoms of ununoctium.
Uses
Ununoctium currently has no uses outside of basic scientific
research.
The
Properties of the Ununoctium Element
Atomic
Number: 118
Atomic Weight: 294
Ununoctium and the
Periodic Table
Period Number: 7
Group Number: 18
Group Name: Noble Gas
Abundances
% in Universe N/A
% in Sun None
% in Meteorites None
% in Earth's Crust None
% in Oceans None
% in Humans None
Ununoctium - IUPAC and the
Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the
International Union of Pure Applied Chemistry, IUPAC, in 1985 and
now recognises more periods and elements than
Dimitri
Mendeleev knew in his day in his day but still all fitting into his concept of
the "Periodic Table" in which
Ununoctium is just one element
that can be found.
Learn about what is
Ununoctium
with these fast facts...
These articles
contain facts and information relating to Ununoctium and each
of the other elements including the
Periodic Symbol, group, classification, properties and atomic
number which is often referred to as the
Periodic Table Number.
Test your knowledge of chemistry and the Periodic Table by
completing the Element Symbols and Atomic Numbers on our
Blank Periodic Table.
Chemistry students will also find a helpful section on
Chemical Formulas. |
