Palladium

Palladium
46Pd
Ni ↑ Pd ↓ Pt Tábìlì ìdásìkò rhodium ← palladium → silver
Ìhànsójú
silvery white metallic
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà	palladium, Pd, 46
Ìpèlóhùn	/pəˈleɪdiəm/ pə-LAY-dee-əm
Ẹ̀ka ẹ́límẹ̀nti	transition metal
Ẹgbẹ́, àsìkò, àdìpò	10, 5, d
Ìwúwo átọ́mù	106.42
Ìtòléra ẹ̀lẹ́ktrónì	[Kr] 4d10 2, 8, 18, 18
Physical properties
Phase	solid
Density (near r.t.)	12.023 g·cm−3
Liquid density at m.p.	10.38 g·cm−3
Melting point	1828.05 K, 1554.9 °C, 2830.82 °F
Boiling point	3236 K, 2963 °C, 5365 °F
Heat of fusion	16.74 kJ·mol−1
Heat of vaporization	362 kJ·mol−1
Molar heat capacity	25.98 J·mol−1·K−1
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, +4, +6 (mildly basic oxide)
Electronegativity	2.20 (Pauling scale)
Ionization energies	1st: 804.4 kJ·mol−1
	2nd: 1870 kJ·mol−1
	3rd: 3177 kJ·mol−1
Atomic radius	137 pm
Covalent radius	139±6 pm
Van der Waals radius	163 pm
Miscellanea
Crystal structure	face-centered cubic
Magnetic ordering	paramagnetic
Electrical resistivity	(20 °C) 105.4 nΩ·m
Thermal conductivity	71.8 W·m−1·K−1
Thermal expansion	(25 °C) 11.8 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 3070 m·s−1
Young's modulus	121 GPa
Shear modulus	44 GPa
Bulk modulus	180 GPa
Poisson ratio	0.39
Mohs hardness	4.75
Vickers hardness	461 MPa
Brinell hardness	37.3 MPa
CAS registry number	7440-05-3
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù palladium
iso NA half-life DM DE (MeV) DP 100Pd syn 3.63 d ε - 100Rh γ 0.084, 0.074, 0.126 - 102Pd 1.02% 102Pd is stable with 56 neutrons 103Pd syn 16.991 d ε - 103Rh 104Pd 11.14% 104Pd is stable with 58 neutrons 105Pd 22.33% 105Pd is stable with 59 neutrons 106Pd 27.33% 106Pd is stable with 60 neutrons 107Pd trace 6.5×106 y β− 0.033 107Ag 108Pd 26.46% 108Pd is stable with 62 neutrons 110Pd 11.72% 110Pd is stable with 64 neutrons