Electronic data		Thermal data		Steric data
Shells: 2,8,18,16,1 Orbitals: [Kr] 4d8 5s1 Electronegativity: 1.4, 2.2 1. Ionization potential: 7.4589 eV 2. Ionization potential: 18.08 eV 3. Ionization potential: 31.06 eV Oxidation states: 5,4,3,1,2,0 Electrical conductivity: 0.211 10^6		Melting point: 1966 °C ±3 Boiling point: 3695 °C Specific heat: 0.242 J/gK Heat of fusion: 21.50 kJ/mol Heat of vaporization: 493.0 kJ/mol Thermal conductivity: 1.50 W/cmK		Atomic radius: 1.83 Å Ionic radius: 0.67 Å () Covalent radius: 1.25 Å Atomic volume: 8.3 cm³/mol Density (293 K): 12.4 g/cm³ Crystal structure: Cubic: Face centered

Nuclide	Abundance [%]	Mass	Spin	Halflife	Decay mode	Decay tree
101Rh	0	101	1/2	3.3y	EC	View
101Rhm	0	101	9/2	4.35d	EC,IT	View
102Rh	0	102	6	~2.9y	EC	View
102Rhm	0	102	2	207d	EC,-,+	View
103Rh	100	102.906	1/2	--	stable	--
103Rhm	0	103	7/2	56.12m	IT	View
105Rh	0	105	7/2	35.36h	-	View
105Rhm	0	105	1/2	40s	IT	View
106Rh	0	106	1	29.9s	-	View

Legend

Name origin:	Greek: rhodon (rose). Its salts give a rosy solution.
Description:	Hard, silvery-white metal
Discovered by:	William Wollaston
Year:	1803
Place:	England
Sources:	Obtained as a by-product of nickel production.
Use(s):	Used as a coating to prevent wear on high quality science equipment and with platinum to make thermocouples.