Palladium
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We sell all over Europe, palladium and other refractory metals. We ship within 24 hours for whole Europe. Fast and uncomplicated deliveries.
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Purchase refractory metals such as rhenium, molybdenum, copper, brass, bronze, aluminum, osmium, ruthenium, iridium, rhodium, palladium, tantalum, titanium, platinum, nickel alloys, pure tungsten, niobium, silver and composite metals and gold.
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Palladium
Palladium is similar to other elements of the platinum group, it is a silver metal that is relatively non-reactive, but of the group has the lowest melting point and is the least dense. In its applications it is more similar to platinum: useful in the metallic form for the production of a variety of products and as a catalyst.
Palladium catalyzes reactions involved in oil breakdown, water treatment, nitric acid production and polymer fabrication, and is found in catalytic converters and fuel cells as a catalyst.
It is also used to increase the rate of hydrogenation and dehydrogenation reactions, and serves many catalytic functions specialized in organic chemistry.
Description:
Symbol: Pd
Atomic number: 46
Atomic weight: 106.42
Element Category: transition metal
Group, period, block: 10, 5, d
Color: silver metallic white / silver-white
Other names: Palladio
Physical properties
Melting point: 1554.9, 2830.82, 1828.05 K
Boiling point: 2963, 5365, 3236 K
Density: 12.023 g · cm 3
Bulk Density: 10.38 g · cm 3
Density @ 20 ° C: 12.02 g / cm 3
Solid density: 12023 kg · m 3
Specific heat: 0.24 (kJ / kg K)
Triple Point: 1825 K, 3,5 × 10 3 kPa
Heat of Melting (kJ · mol -1): 17.2
Heat of Vaporization (kJ · mol -1): 361.5
Heat of Atomization (kJ · mol -1): 377.4
Thermal conductivity: 71.8 W · m? 1 · K? 1
Thermal expansion: (25 ° C) 11.8 μm · m -1 · K -1
Electrical resistivity: (20 ° C) 105.4 n · m
Molar heat capacity: 25.98 J · mol -1 · K -1
Young's modulus: GPa of 121
Shear modulus: 44 GPa
Bulk module: GPa 180
Poisson ratio: 0.39
Hardness of Mohs: 4.75
Vickers Hardness: 461 MPa
Brinell Hardness: 310 MPa
Sound velocity: (20 ° C) 3070 m · s -1
Pauling's electronegativity: 2.2
Allred Rochow Eletronegativity: 1,35
Pauling Electropositivity: 1.8
Reflectivity (%): 72
Chemical properties
Electrons: 46
Protons: 46
Neutron: 60
Electronic configuration: [Kr] 4d 10
Atomic radius: 137 pm
Atomic radius, unbound (Å): 2.1
Covalent Ray: 139 ± 18:00
Covalent Radius (Å): 1.3
Van der Waals Radius: 163 pm
Oxidation states: 0, +1, +2, +4, +6 (slightly basic oxide)
Solid state
Crystal structure: centered on the cubic face
Magnetic ordering: paramagnetic
Electronic affinity (kJ · mol -1) 54,206
1st ionization energy: 520,23 kJ · mol -1
2nd ionization energy: 7298,22 kJ · mol -1
3rd ionization energy: 11815.13 kJ · mol -1