Rhodium

ruthenium ← rhodium → palladium Co ↑ Rh ↓ Ir 45Rh Periodic table
Ìfarahàn
silvery white metallic
Àwọn ìní àníkárí
Orúkọ, àmì-ìdámọ̀, nọ́mbà	rhodium, Rh, 45
Ìpè	/ˈroʊdiəm/ ROH-dee-əm
Ẹ̀ka apilẹ̀sẹ̀	transition metal
Àdìpọ̀, ìgbà, block	9, 5, d
Ìwúwo átọ́mù	102.90550 g·mol−1
Ìtòjọ ẹ̀lẹ́ktrónì	[Kr] 4d8 5s1
Àwọn ẹ̀lẹ́ktrónì lórí ọ̀nà kan	2, 8, 18, 16, 1 (Image)
Àwọn ìní aláfójúrí
Phase	solid
Kíki (tó súnmọ́ r.t.)	12.41 g·cm−3
Liquid density at m.p.	10.7 g·cm−3
ojúàmì ìyọ́	2237 K, 1964 °C, 3567 °F
ajúàmì ìhó	3968 K, 3695 °C, 6683 °F
Heat of fusion	26.59 kJ·mol−1
Heat of vaporization	494 kJ·mol−1
Specific heat capacity	(25 °C) 24.98 J·mol−1·K−1
Vapor pressure
P/Pa 1 10 100 1 k 10 k 100 k at T/K 2288 2496 2749 3063 3405 3997
Atomic properties
Oxidation states	6, 5, 4, 3, 2, 1, -1 (amphoteric oxide)
Electronegativity	2.28 (Pauling scale)
Ionization energies	1st: 719.7 kJ·mol−1
	2nd: 1740 kJ·mol−1
	3rd: 2997 kJ·mol−1
Atomic radius	134 pm
Covalent radius	142±7 pm
Miscellanea
Crystal structure	face-centered cubic
Magnetic ordering	paramagnetic
Electrical resistivity	(0 °C) 43.3 nΩ·m
Thermal conductivity	(300 K) 150 W·m−1·K−1
Thermal expansion	(25 °C) 8.2 µm·m−1·K−1
Speed of sound (thin rod)	(20 °C) 4700 m/s
Young's modulus	380 GPa
Shear modulus	150 GPa
Bulk modulus	275 GPa
Poisson ratio	0.26
Mohs hardness	6.0
Vickers hardness	1246 MPa
Brinell hardness	1100 MPa
CAS registry number	7440-16-6
Most stable isotopes
Main article: Isotopes of rhodium
iso NA half-life DM DE (MeV) DP 99Rh syn 16.1 d ε - 99Ru γ 0.089, 0.353, 0.528 - 101mRh syn 4.34 d ε - 101Ru IT 0.157 101Rh γ 0.306, 0.545 - 101Rh syn 3.3 y ε - 101Ru γ 0.127, 0.198, 0.325 - 102mRh syn 2.9 y ε - 102Ru γ 0.475, 0.631, 0.697, 1.046 - 102Rh syn 207 d ε - 102Ru β+ 0.826, 1.301 102Ru β− 1.151 102Pd γ 0.475, 0.628 - 103Rh 100% 103Rh is stable with 58 neutrons 105Rh syn 35.36 h β− 0.247, 0.260, 0.566 105Pd γ 0.306, 0.318 -