Download Ununpentium does not occur naturally in the Earth`s crust. Following

Stable
isotope
(none)
Relative
atomic mass
Mole
fraction
Ununpentium does not occur naturally in the Earth’s crust. Following earlier reports for the
discovery of this element, IUPAC invited the collaborating teams of discovers of this element at
the Joint Institute for Nuclear Research, Dubna (Russia), Oak Ridge National Laboratory (USA),
Vanderbilt University (USA) and Lawrence Livermore National Laboratory (USA) to propose a
name and symbol [678]. It was announced June 2016 that the name moscovium and symbol Mc
were proposed. The name is in recognition of the Moscow region and honors the ancient Russian
land that is the home of the Joint Institute for Nuclear Research, where the discovery
experiments were conducted using the Dubna Gas-Filled Recoil Separator in combination with
the heavy ion accelerator capabilities of the Flerov Laboratory of Nuclear Reactions. A fivemonth public review is now set, expiring 8 November 2016, prior to the formal approval by the
IUPAC Council.
48
Ca and 243 Am were bombarded together in a cyclotron during a series of experiments
from July 14, 2003 to August 10, 2003 (Figure 1). In February 2004, the results from these
experiments were released in a report that stated ununpentium had been synthesized.
Ununpentium has no known isotopic applications aside from scientific research.
Fig. 1: Accelerated 48Ca ion colliding with a 243 Am atom in a cyclotron creating ununpentium
and ununtrium. (Photo Source: Thomas Tegge, Lawrence Livermore National Laboratory) [688,
689].
Glossary
atomic number (Z) – The number of protons in the nucleus of an atom.
cyclotron – an apparatus in which charged atomic and subatomic particles are accelerated by a
rapidly varying (radio frequency) electric field while following an outward spiral path in a
constant magnetic field. [return]
electron – elementary particle of matter with a negative electric charge and a rest mass of about
9.109 × 10–31 kg.
element (chemical element) – a species of atoms; all atoms with the same number of protons in
the atomic nucleus. A pure chemical substance composed of atoms with the same number of
protons in the atomic nucleus [703]. [return]
neutron – an elementary particle with no net charge and a rest mass of about 1.675 × 10–27 kg,
slightly more than that of the proton. All atoms contain neutrons in their nucleus except for
protium (1H).
proton – an elementary particle having a rest mass of about 1.673 × 10–27 kg, slightly less than
that of a neutron, and a positive electric charge equal and opposite to that of the electron. The
number of protons in the nucleus of an atom is the atomic number.
References
678. I. U. o. P. a. A. Chemistry. IUPAC IS NAMING THE FOUR NEW ELEMENTS
NIHONIUM, MOSCOVIUM, TENNESSINE, AND OGANESSON. 2016 June 22.
http://iupac.org/iupac-is-naming-the-four-new-elements-nihonium-moscovium-tennessine-andoganesson/
687. N. R. C. Canada. Periodic Table of the Elements: Ununpentium. National Research
Council Canada. 2014 Feb. 21. http://www.nrc-cnrc.gc.ca/eng/education/elements/el/uup.html
688. Reporter. Livermore Scientists Team With Russia To Discover Elements 113 and 115.Â
Lawrence Livermore National Laboratory Public Affars.
https://www.llnl.gov/news/newsreleases/2004/NR-04-02-01.html
689. T. Tegge. Lawrence Livermore National Laboratory.
703. I. U. o. P. a. A. Chemistry. Compendium of Chemical Terminology, 2nd ed. (the "Gold
Book"). Blackwell Scientific Publications, Oxford (1997).