| Rhodium
|
45Rh
|
|
|
| Panagway
|
silvery white metallic
|
| Kinatibuk-ang mga kinaiya
|
| Ngalan, simbolo, kaiphan
|
rhodium, Rh, 45
|
| Paglitok
|
[[Help:Pronunciation respelling key|Plantilya:Smallcaps all-dee-əm]]
|
| Kategoriyang elemento
|
puthaw nga transisyon
|
| Group, period, block
|
9, 5, d
|
| Gibug-aton sa atomo
|
102.90550
|
| Kontorno sa elektron
|
[Kr] 5s1 4d8
2, 8, 18, 16, 1
 Electron shells of rhodium (2, 8, 18, 16, 1) |
| History
|
| Pagkadiskobre
|
William Hyde Wollaston (1804)
|
| First isolation
|
William Hyde Wollaston (1804)
|
| Physical properties
|
| Phase
|
magahi
|
| Density (near r.t.)
|
12.41 g·cm−3
|
| Liquid density at m.p.
|
10.7 g·cm−3
|
| Melting point
|
2237 K, 1964 °C, 3567 °F
|
| Boiling point
|
3968 K, 3695 °C, 6683 °F
|
| Heat of fusion
|
26.59 kJ·mol−1
|
| Heat of vaporization
|
494 kJ·mol−1
|
| Molar heat capacity
|
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], -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[2]
|
| Electrical resistivity
|
(0 °C) 43.3 nΩ·m
|
| Thermal conductivity
|
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−1
|
| 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
|
|
|
| · r
|
Plantilya:Template reference list
- ↑ "Rhodium: rhodium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
- ↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
