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Atomic number
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108
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Melting point
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unknown
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Boiling point
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unknown
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Symbol
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Hs
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Electron
Configuration
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(Rn)7s25f146g6
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atomic weight
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265
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History:
In 1984 a germane research team
lead by Peter Amberguster and Gottfeild at the institute of
Harvey Ion reasurchat darmstadt bombarded led-208 atoms with
iron-58 ions. In ten days of bombardment , they
successfully produced three atoms of an isotope of element
108 with mass number 265 and a half-life of 2
msec.
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Name
origin:
The suggestion that the new manmade
element be named, Hassium, which is derived from the Latin
word for the German state Hassle, for that's where the
institution was located.
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Facts:
In 1994 a committee of the
International union of pure and applied chemistry (IUPAC),
convinced to resolve naming disputed for the transaction
elements, they recommended that element number 108 be named
Hahadeium, but the name Hassium, was adopted
internationally.
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Glossary:
Ions:
Atoms or radicals
having a charge of positive (cation) or negative (anion)
electricity owing to the loss (positive) or gain (negative)
of one or more
electrons:
Stable elementary
particles having the smallest known negative charge, present
in all elements; also called negations. Positively charged
electrons are called positrons. The numbers, energies and
arrangement of electrons around atomic nuclei determine the
chemical identities of elements. Beams of electrons are
called cathode rays or beta rays, the latter being a
high-energy byproduct of nuclear decay.
half-life:
<radio biology>
The time required to reduce the amount of a radio nuclide to
one-half the amount originally present. Physical or
radioactive half-life refers to reduction of activity by
radioactive decay, biological half-life refers to biological
elimination from the body and effective half-life refers to
the combined action of radioactive decay and biological
elimination.
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