మూస:Infobox Rhodium

రోడియం, ₀₀Rh
రోడియం
Pronunciation	/ˈroʊdiəm/ (ROH-dee-əm)
Appearance	silvery white metallic
Standard atomic weight Ar°(Rh)
	102.90549±0.00002; 102.91±0.01 (abridged);
రోడియం in the periodic table
	రుథేనియం ← రోడియం → పల్లాడియం
Group	మూస:Infobox element/symbol-to-group/format
Period	period 5
Block	d-block
Electron configuration	[Kr] 4d8 5s1
Electrons per shell	2, 8, 18, 16, 1
Physical properties
Phase at STP	solid
Melting point	2237 K (1964 °C, 3567 °F)
Boiling point	3968 K (3695 °C, 6683 °F)
Density (near r.t.)	12.41 g/cm3
when liquid (at m.p.)	10.7 g/cm3
Heat of fusion	26.59 kJ/mol
Heat of vaporization	494 kJ/mol
Molar heat capacity	24.98 J/(mol·K)
Atomic properties
Oxidation states	−3, −1, 0, +1, +2, +3, +4, +5, +6, +7 (an amphoteric oxide)
Electronegativity	Pauling scale: 2.28
Atomic radius	empirical: 134 pm
Covalent radius	142±7 pm
	Spectral lines of రోడియం
Other properties
Natural occurrence	primordial
Crystal structure	face-centered cubic (fcc)
Speed of sound thin rod	4700 m/s (at 20 °C)
Thermal expansion	8.2 µm/(m⋅K) (at 25 °C)
Thermal conductivity	150 W/(m⋅K)
Electrical resistivity	43.3 n Ω⋅m (at 0 °C)
Magnetic ordering	paramagnetic
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 Number	7440-16-6
History
Discovery	William Hyde Wollaston (1804)
First isolation	William Hyde Wollaston (1804)
Isotopes of రోడియం v; e;
	Template:infobox రోడియం isotopes does not exist
	Category: రోడియం; view; talk; edit; \| references

References

↑ "Standard Atomic Weights: Rhodium". CIAAW. 2017.
↑ Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.
↑ Ellis J E. Highly Reduced Metal Carbonyl Anions: Synthesis, Characterization, and Chemical Properties. Adv. Organomet. Chem, 1990, 31: 1-51.
↑ "Rhodium: rhodium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.
↑ Rh(VII) is known in the RhO₃⁺ cation, see Da Silva Santos, Mayara; Stüker, Tony; Flach, Max; Ablyasova, Olesya S.; Timm, Martin; von Issendorff, Bernd; Hirsch, Konstantin; Zamudio‐Bayer, Vicente; Riedel, Sebastian; Lau, J. Tobias (2022). "The Highest Oxidation State of Rhodium: Rhodium(VII) in [RhO3]+". Angew. Chem. Int. Ed. 61 (38): e202207688. doi:10.1002/anie.202207688. PMC 9544489. PMID 35818987.
↑ Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
↑ "Rhodium: rhodium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.

[1] "Standard Atomic Weights: Rhodium". CIAAW. 2017.

[CIAAW2021-2] Prohaska, Thomas; Irrgeher, Johanna; Benefield, Jacqueline; et al. (2022-05-04). "Standard atomic weights of the elements 2021 (IUPAC Technical Report)". Pure and Applied Chemistry (in ఇంగ్లీష్). doi:10.1515/pac-2019-0603. ISSN 1365-3075.

[3] Ellis J E. Highly Reduced Metal Carbonyl Anions: Synthesis, Characterization, and Chemical Properties. Adv. Organomet. Chem, 1990, 31: 1-51.

[4] "Rhodium: rhodium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.

[5] Rh(VII) is known in the RhO₃⁺ cation, see Da Silva Santos, Mayara; Stüker, Tony; Flach, Max; Ablyasova, Olesya S.; Timm, Martin; von Issendorff, Bernd; Hirsch, Konstantin; Zamudio‐Bayer, Vicente; Riedel, Sebastian; Lau, J. Tobias (2022). "The Highest Oxidation State of Rhodium: Rhodium(VII) in [RhO3]+". Angew. Chem. Int. Ed. 61 (38): e202207688. doi:10.1002/anie.202207688. PMC 9544489. PMID 35818987.

[6] Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.

[7] "Rhodium: rhodium(I) fluoride compound data". OpenMOPAC.net. Retrieved 2007-12-10.

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