Template:Infobox palladium

Palladium, ₄₆Pd

Palladium
Pronunciation	/pəˈleɪdiəm/ ​(pə-LAY-dee-əm)
Appearance	sillery white
Standard atomic weight Ar, std(Pd)	7002106420000000000♠106.42(1)
Palladium in the periodic cairt
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium Ni ↑ Pd ↓ Pt rhodium ← palladium → siller
Atomic nummer (Z)	46
Group	group 10
Period	period 5
Block	d-block
Element category	Transeetion metal
Electron confeeguration	[Kr] 4d10
Electrons per shell	2, 8, 18, 18
Pheesical properties
Phase at STP	solit
Meltin pynt	1828.05 K ​(1554.9 °C, ​2830.82 °F)
Bylin pynt	3236 K ​(2963 °C, ​5365 °F)
Density (near r.t.)	12.023 g/cm3
when liquid (at m.p.)	10.38 g/cm3
Heat o fusion	16.74 kJ/mol
Heat o vapourisation	362 kJ/mol
Molar heat capacity	25.98 J/(mol·K)
Vapour pressur P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1721 1897 2117 2395 2753 3234
Atomic properties
Oxidation states	0, +1, +2, +3, +4 (a mildly basic oxide)
Electronegativity	Pauling scale: 2.20
Atomic radius	empirical: 137 pm
Covalent radius	139±6 pm
Van der Waals radius	163 pm
Colour lines in a spectral range Spectral lines o palladium
Ither properties
Naitural occurrence	primordial
Creestal structur	​face-centred cubic (fcc)
Speed o soond thin rod	3070 m/s (at 20 °C)
Thermal expansion	11.8 µm/(m·K) (at 25 °C)
Thermal conductivity	71.8 W/(m·K)
Electrical resistivity	105.4 n Ω·m (at 20 °C)
Magnetic orderin	paramagnetic
Young's modulus	121 GPa
Shear modulus	44 GPa
Bulk modulus	180 GPa
Poisson ratio	0.39
Mohs haurdness	4.75
Vickers haurdness	461 MPa
Brinell haurdness	310 MPa
CAS Nummer	7440-05-3
History
Diskivery	William Hyde Wollaston (1803)
First isolation	William Hyde Wollaston (1803)
Main isotopes o palladium
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct 100Pd syn 3.63 d ε 100Rh γ - 102Pd 1.02% stable 103Pd syn 16.991 d ε 103Rh 104Pd 11.14% stable 105Pd 22.33% stable 106Pd 27.33% stable 107Pd trace 6.5×106 y β− 107Ag 108Pd 26.46% stable 110Pd 11.72% >6×1017 y β−β− 110Cd

style="text-align:left"| data m.p. cat
	in	calc from C	diff	report	ref
C	1554.9	—	—
K	1828.05	1828.1	-0.05
F	2830.82	2830.8	0.02
WD	!
input	C: 1554.9, K: 1828.05, F: 2830.82
comment

style="text-align:left"| data b.p. cat
	in	calc from C	diff	report	ref
C	2963	—	—
K	3236	3236	0
F	5365	5365	0
WD	!
input	C: 2963, K: 3236, F: 5365
comment

References

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