订货号	包装规格
Length (Round)
590-225-92	15 mm
203-248-65	25 mm
879-203-43	50 mm

半岛bd体育手机客户端 参数

Diameter[直径]	2mm
Length[长度]	15 mm - 50 mm
Purity[纯度]	99.99%
Atomic Properties(原子属性)
Atomic number	51
Atomic weight ( amu )	121.75000
Crystal structure	Rhombohedral
Electronic structure	Kr4d??5s?5p?
Ionisation potential ( No./eV )	1 / 8.64
Ionisation potential ( No./eV )	3 / 25.3
Ionisation potential ( No./eV )	2 / 16.53
Ionisation potential ( No./eV )	5 / 56.0
Ionisation potential ( No./eV )	4 / 44.2
Ionisation potential ( No./eV )	6 / 108
Natural isotope distribution ( Mass No./% )	121 / 57.3
Natural isotope distribution ( Mass No./% )	123 / 42.7
Photo-electric work function ( eV )	4.10
Thermal neutron absorption cross-section ( Barns )	5.0000
Valences shown	-3 ,0,3,5
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	40.1@20℃
Temperature coefficient ( K?? )	0.00510 @0-100℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV )	4.89
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	9.000 @0-100℃
Latent heat of evaporation ( J g?? )	1370
Latent heat of fusion ( J g?? )	163.00
Melting point ( C )	630.70
Specific heat ( J K?? kg?? )	205.0 @25℃
Thermal conductivity ( W m?? K?? )	24.40 @0-100℃
Physical Properties(物理性质)
Boiling point ( C )	1750
Density ( g cm?? )	6.680 @20
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	42.0
Hardness - Mohs ( Polycrystalline )	3.00 - 3.30
Material condition	Polycrystalline
Poisson's ratio ( Polycrystalline )	0.250 - 0.330
Tensile modulus ( GPa ) ( Polycrystalline )	54.70

其他参数

公差

直径	≤10mm	±10%
	聚合物	+20% / -10%
	陶瓷	+20% / -10%
	>10mm	±5%
	陶瓷	+20% / -10%
	聚合物	+20% / -10%
长度	<100mm	±1mm
	≥100mm	+5% / -1%

毒性

吸入、摄入或通过皮肤吸收后可能造成死亡或对健康造成急性或慢性损害的化学品。