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Silver Facts: Silver as an Element |
28
Ni
Nickel |
29
Cu
Copper |
30
Zn
Zinc |
46
Pd
Palladium |
47
Ag
Silver |
48
Cd
Cadmium |
78
Pt
Platinum |
79
Au
Gold |
80
Hg
Mercury |
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NAMES:
English: Silver
French: Argent
German: Silber
Italian: Argento
Latin: Argentum
Spanish: Plata |
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BASIC
INFORMATION:
Symbol: Ag
Atomic number: 47
Group number: 11
Mass: 107.868
Density @ 293 K: 10.5 g/cm3
Atomic volume: 10.3 cm3/mol
Melting Point: 961.93 C (1235.1 K)
Boiling Point: 2212 C (2428 K)
Heat of fusion: 11.30 kJ/mol
Heat of vaporization: 250.580 kJ/mol
Number of Protons/Electrons: 47
Number of neutrons: 61
Classification: Transition Metal
Crystal Structure: Face-centered Cubic
Color: silver
Hardness: 3.25 mohs
Characteristics: soft, ductile, tarnishes |
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Structure of atom:
Number of shells: 5
Atom arrangement:
1. first shell - 2
2. second shell - 8
3. third shell - 18
4. fourth shell - 18
5. fifth shell - 1 |
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OXIDATION:
Electron configuration: [Kr] 4d10 5s1
Minimum oxidation number: 0
Maximum oxidation number: 3
Minimum oxidation state: 0 (silver occurs naturally in
ores in its elemental state)
Maximum oxidation state: 3 (the unit cell of silver
oxide, Ag4O4, has two atoms of univalent silver and
two atoms of trivalent silver) |
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HALF
LIVES: |
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Isotope |
Half Live |
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Ag105 |
41.3 days |
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Ag105m |
7.2 minutes |
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Ag106m |
8.4 days |
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Ag107 |
stable |
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Ag108 |
2.4 minutes |
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Ag108m |
130 years |
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Ag109 |
stable |
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Ag109m |
39.8 seconds |
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Ag110 |
24.6 seconds |
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Ag110m |
249.8 days |
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Ag111 |
7.47 days |
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ENERGIES:
1st ionization energy: 731 kJ/mole
Electronegativity: 1.93
2nd ionization energy: 2073.5 kJ/mole
Electron affinity: 125.6 kJ/mole
3rd ionization energy: 3360.6 kJ/mole
Specific heat: 0.235 J/gK
Heat atomization: 284 kJ/mole atoms |
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REACTIONS:
With air: mild, =>Ag2O
With 6M HCl: none
With 6M HCl: none
With 15M HNO3: mild, =>AgNO3 |
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OTHER
FORMS:
number of isotopes: 2
hydride(s): none
oxide(s): Ag2O
chloride(s): AgCl |
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RADIUS:
ionic radius (2- ion): pm
ionic radius (1- ion): pm
atomic radius: 144 pm
ionic radius (1+ ion): 129 pm
ionic radius (2+ ion): 108 pm
ionic radius (3+ ion): 89 pm |
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CONDUCTIVITY:
Thermal conductivity: 429 J/m-sec-degC
Electrical conductivity: 630.5 1/mohm-cm
Electrical resistivity: 1.467 X 10-8 ohms-m (OoC)
Polarizability: 7.9 A^3 |
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ABUNDANCE:
Silver occurs in the metallic state, commonly associated
with gold, copper, lead, and zinc. It is also found in
some 60 minerals including: argentite (a sulfide),
cerargyrite (a chloride), many other sulfides and
tellurides.
Relative abundance in solar system: -0.313 log
Abundance earth's crust: -1.2 log |
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Legal Disclaimer:
The above information has been sited from The Silver
Institute; please visit
www.silverinstitute.org to know more about
silver. The Silver Institute is a nonprofit
international association that draws its membership from
across the breadth of the silver industry. This includes
leading silver mining houses, refiners, bullion
suppliers, and manufacturers of silver products and
wholesalers of silver investment products. Established
in 1971, the Institute serves as the industry's voice in
increasing public understanding of the many uses and
values of silver. |
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