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Astatine
"Astatine" is also a:
user
created by
Azathoth
(
thing
) by
Gone Jackal
(2.3 wk)
(
print
)
?
I like it!
Tue Sep 05 2000 at 21:00:37
Astatine (
atomic number
85) is what happens in
nature
when that
naughty
radioactive
misfit
of the
actinide series
,
uranium
, decays. The least
unstable
naturally occurring
isotope
is 219, with a
half life
of 0.9 minutes, though that of the artificially created 210 is 8.3 hours.
Shell
structure
is 2.8.18.32.18.7;
ground state configuration
is
Xe
.4f
14
.5d
10
.6s
2
.6p
5
Fat chance
any visible amount will ever be created, making astatine one of the
kung-fu space ninjas
of the chemical world, leaving chemists puzzling and making half-assed guesses about its chemical properties in its non-existent wake.
(
thing
) by
SSMark82
(1.6 y)
(
print
)
?
I like it!
Wed Dec 13 2000 at 0:16:19
Astatine
Symbol:
At
Atomic Number
: 85
Atomic Weight
: 210 (most stable)
Boiling Point
: 610 K
Melting Point
: 575 K
Density
at 300K: ??? g/cm
3
Covalent
radius: 1.47
Atomic
radius: 1.43
Atomic
volume
: ??? cm
3
/mol
First
ionization
potental: ??? V
Specific heat
capacity: ??? Jg
-1
K
-1
Thermal
conductivity: 1.7 Wm
-1
K
-1
Electrical conductivity: ???*10
6
Ω
-1
m
-1
Heat of fusion
: 12 kJ/mol
Heat of vaporization
: 30 kJ/mol
Electronegativity
: 2.2 (Pauling's)
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