Chemicool

Ag

47

107.868
Silver
General | States | Energies | Oxidation & Electrons |Appearance & Characteristics
Reactions | Other Forms |Radius | Conductivity | Abundance
Encyclopedia Britannica articles

General
Name Silver Symbol Ag
atomic number 47 Atomic weight 107.868
Density @ 293 K 10.5 g/cm3 Atomic volume 10.3 cm3/mol
Group Trans. Met. discovered 0

States
state (s, l, g) s
melting point 1235.1 K boiling point 2428 K
Heat of fusion 11.30 kJ/mol Heat of vaporization 250.580 kJ/mol
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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

Oxidation & Electrons
Shells 2,8,18,18,1 electron configuration [Kr] 4d10 5s1
minimum oxidation number 0 maximum oxidation number 3
min. common oxidation no. 0 max. common oxidation no. 3
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Appearance & Characteristics
structure fcc: face-centered cubic color silvery
uses film(AgBr),coins,jewelry toxicity
hardness 3.25 mohs characteristics soft, ductile, tarnishes

Reactions
reaction with air mild, = Ag2O reaction with 6M HCl none
reaction with 6M HCl none reaction with 15M HNO3 mild, = AgNO3
reaction with 6M NaOH
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Other Forms
number of isotopes 2 hydride(s) none
oxide(s) Ag2O chloride(s) AgCl

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-deg electrical conductivity 630.5 1/mohm-cm
polarizability 7.9 A^3

Abundance
source Argentite (sulfide) rel. abund. solar system -0.313 log
abundance earth's crust -1.2 log cost, pure 120 $/100g
cost, bulk 14 $/100g
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