Fàdákà

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Lọ sí: atọ́ka, àwárí
palladiumfàdákàcadmium
Cu

Ag

Au
Ìfarahàn
lustrous white metal

Electrolytically refined silver
Àwọn ìní àníkárí
Orúkọ, àmì-ìdámọ̀, nọ́mbà fàdákà, Ag, 47
Ẹ̀ka apilẹ̀sẹ̀ transition metal
Àdìpọ̀, ìgbà, block 115, d
Ìwúwo átọ́mù 107.8682g·mol−1
Ìtòjọ ẹ̀lẹ́ktrónì [Kr] 4d10 5s1
Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan 2, 8, 18, 18, 1 (Image)
Àwọn ìní aláfójúrí
Phase solid
Kíki (tó súnmọ́ r.t.) 10.49 g·cm−3
Liquid density at m.p. 9.320 g·cm−3
ojúàmì ìyọ́ 1234.93 K, 961.78 °C, 1763.2 °F
ajúàmì ìhó 2435 K, 2162 °C, 3924 °F
Heat of fusion 11.28 kJ·mol−1
Heat of vaporization 250.58 kJ·mol−1
Specific heat capacity (25 °C) 25.350 J·mol−1·K−1
Vapor pressure
P/Pa 1 10 100 1 k 10 k 100 k
at T/K 1283 1413 1575 1782 2055 2433
Atomic properties
Oxidation states 1, 2, 3 (amphoteric oxide)
Electronegativity 1.93 (Pauling scale)
Ionization energies 1st: 731.0 kJ·mol−1
2nd: 2070 kJ·mol−1
3rd: 3361 kJ·mol−1
Atomic radius 144 pm
Covalent radius 145±5 pm
Van der Waals radius 172 pm
Miscellanea
Crystal structure face-centered cubic
Magnetic ordering diamagnetic
Electrical resistivity (20 °C) 15.87 nΩ·m
Thermal conductivity (300 K) 429 W·m−1·K−1
Thermal diffusivity (300 K) 174 mm²/s
Thermal expansion (25 °C) 18.9 µm·m−1·K−1
Young's modulus 83 GPa
Shear modulus 30 GPa
Bulk modulus 100 GPa
Poisson ratio 0.37
Mohs hardness 2.5
Vickers hardness 251 MPa
Brinell hardness 24.5 MPa
CAS registry number 7440-22-4
Most stable isotopes
Main article: Isotopes of fàdákà
iso NA half-life DM DE (MeV) DP
105Ag syn 41.2 d ε - 105Pd
γ 0.344, 0.280,
0.644, 0.443
-
106mAg syn 8.28 d ε - 106Pd
γ 0.511, 0.717,
1.045, 0.450
-
107Ag 51.839% 107Ag is stable with 60 neutrons
108mAg syn 418 y ε - 108Pd
IT 0.109 108Ag
γ 0.433, 0.614,
0.722
-
109Ag 48.161% 109Ag is stable with 62 neutrons
111Ag syn 7.45 d β 1.036, 0.694 111Cd
γ 0.342 -

Fàdákà je apilese kemika onide to ni ami-idamo kemika Ag (Látìnì: argentum) ati nomba atomu 47.


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