Template:Infobox palladium

Palladium, ₄₆Pd

Palladium
Pronunciation	/pəˈleɪdiəm/ ​(pə-LAY-dee-əm)
Appearance	silvery white
Standard atomic weight Ar, std(Pd)	106.42(1)
Palladium in the periodic table
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Ni ↑ Pd ↓ Pt rhodium ← palladium → silver
Atomic number (Z)	46
Group	group 10
Period	period 5
Block	d-block
Element category	d-block
Electron configuration	[Kr] 4d10
Electrons per shell	2, 8, 18, 18
Physical properties
Phase at STP	solid
Melting point	1828.05 K ​(1554.9 °C, ​2830.82 °F)
Boiling point	3236 K ​(2963 °C, ​5365 °F)
Density (near r.t.)	12.023 g/cm3
when liquid (at m.p.)	10.38 g/cm3
Heat of fusion	16.74 kJ/mol
Heat of vaporization	358 kJ/mol
Molar heat capacity	25.98 J/(mol·K)
Vapor pressure 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
Ionization energies	1st: 804.4 kJ/mol 2nd: 1870 kJ/mol 3rd: 3177 kJ/mol
Atomic radius	empirical: 137 pm
Covalent radius	139±6 pm
Van der Waals radius	163 pm
Spectral lines of palladium
Other properties
Natural occurrence	primordial
Crystal structure	​face-centered cubic (fcc)
Speed of sound 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 nΩ·m (at 20 °C)
Magnetic ordering	paramagnetic
Magnetic susceptibility	+567.4·10−6 cm3/mol (288 K)
Young's modulus	121 GPa
Shear modulus	44 GPa
Bulk modulus	180 GPa
Poisson ratio	0.39
Mohs hardness	4.75
Vickers hardness	400–600 MPa
Brinell hardness	320–610 MPa
CAS Number	7440-05-3
History
Naming	after asteroid Pallas, itself named after Pallas Athena
Discovery and first isolation	William Hyde Wollaston (1802)
Main isotopes of palladium
Iso­tope Abun­dance Physics:Half-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% stable

Pd 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
max precision	2
WD
input	C: 1554.9, K: 1828.05, F: 2830.82
comment

Pd data b.p. cat
	in	calc from C	diff	report	ref
C	2963	—	—
K	3236	3236	0
F	5365	5365	0
max precision	0
WD
input	C: 2963, K: 3236, F: 5365
comment

PTChemistry:palladium

Rh ← i'box Rh	iso46Pd  infobox  isobox	→ Ag i'box Ag
Commons  Wikidata:Q1089  Wiktionary Indexes in PT: § below · Page

[]  Data sets read by {{Infobox element}}
Name and identifiers
Top image (caption, alt)
Pronunciation
Category (enwiki)
Standard atomic weight
most stable isotope
Natural occurrence
Phase at STP
Chemistry:Oxidation states
Spectral lines image
Physics:Electron configuration (cmt, ref)
Term symbol * (cmt, ref)
Wikidata *
* Not used in {{Infobox element}} (2019-02-03) See also {{Infobox element/symbol-to--navbox}}

References

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