Bewise Inc. www.tool-tool.com Reference source from the internet.
Tantali - Tungsten - Reni
Mo

W
Sg

Carateristichis gjenerâls
Non, Simbul chimic, Numar atomic Tungsten, W, 74
Serie chimiche Metai di transizion
Grup, Periodi, Bloc 6 (VIB), 6, d
Densitât, Durece 19250 kg/m3, 7,5
Aspiet blanc-grisat, lusint
Aspiet dal Tungsten
Proprietâts atomichis
Pês atomic 183,84 amu
Rai atomic (calc.) 135 (193) pm
Rai covalent 146 pm
Rai di van del Waals nissun dât
Configurazion eletroniche [Xe]4f145d4 6s2
eletrons par nivel energjetic 2, 8, 18, 32, 12, 2
Stâts di ossidazion 6, 5, 4, 3, 2
(mediamente Acit)
Struture cristaline cubiche a cuarp centrât
Proprietâts fisichis
Stât a temperadure ambient solit
Pont di fusion 3695 K (3422°C)
Pont di bolidure 5828 K (5555°C)
Volum molâr 9,47 × 10-6 m3/mol
Calôr di evaporazion 824 kJ/mol
Calôr di fusion 35,4 kJ/mol
Tension dal vapôr 4,27 Pa a 3680 K
Velocitât dal sun 5174 m/s a 293,15 K
Varis
Eletronegativitât 2,36 (Scjale di Pauling)
Calôr specific 130 J/(kg*K)
Conducibilitât eletriche 1,89 × 107 /m ohm
Conducibilitât termiche 174 W/(m*K)
Energje di prime ionizazion 770 kJ/mol
Energjie di seconde ionizazion 1700 kJ/mol
Isotops plui stabii
iso NA TD DM DE DP
180W 0,12% 1,8 × 1018 agns α 2,516 176Hf
181W sintetic 121,2 d ε 0,188 181Ta
182W 26,50% W al è stabil cun 108 neutrons
183W 14,3% W al è stabil cun 109 neutrons
184W 30,64% W al è stabil cun 110 neutrons
185W sintetic 75,1 d β- 0,433 185Re
186W 28,43% W al è stabil cun 112 neutrons

iso = isotop
NA = abondance in nature
TD = timp di decjadiment
DM = modalitât di decjadiment
DE = energjie di decjadiment in MeV
DP = prodot di decjadiment

Il Tungsten (o wolframi) al è l’element chimic di numar atomic 74. Il so simbul al è W.


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