Rhodium silih tunggil datu kimia antuk simbol Rh miwah wilangan atom 45. Punika langka, mawarna putih masawang pérak, katos, tahan korosi , miwah mawit kimiawi lembam rumasuk logam transisi . Ipun dados logam mulia miwah anggota saking seka platinum . Wantah kawéntenan asiki isotop ring palemahan, 103 Rh. Rhodium alami ketah nyané katemuin manados logam bébas, dados paduan sareng logam sarupa, miwah kapah manados senyawa kimia ring mineral sekadi bowieite miwah rhodplumsite . Punika dados silih tunggil logam mulia pinih langka miwah pinih maharga.
Rhodium, 45 Rh Rhodium rodiyum· Pabaosan (ROH -dee-əm ) Cingakan métalik putih masawang pérak Bobot atom standar A r, std (Rh) 7002102905490000000♠ 102.90549 (2)[ 1] Rhodium ring tabél périodik
Wilangan atom (Z ) 45 Watek golongan 9 Période période 5 Blok blok-d Konpigurasi éléktron [Kr ] 4d8 5s1 Éléktron per kulit 2, 8, 18, 16, 1 Cecirén pisik Pase ring STP padet Titik lebur 2237 K (1964 °C, 3567 °F) Titik didih 3968 K (3695 °C, 6683 °F) Kapadetan (nampek s.r. ) 12.41 g/cm3 ri kala éncéh (ring t.l. ) 10.7 g/cm3 Panes fusi 26.59 kJ/mol Panes panguapan 493 kJ/mol Kapasitas panes molar 24.98 J/(mol·K) Tekanan uap
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
2288
2496
2749
3063
3405
3997
Cecirén atom Paindikan oksidasi −3[ 2] , −1, 0, +1,[ 3] +2, +3 , +4, +5, +6, +7[ 4] (oksida ampotér ) Kaéléktronégatipan skala Pauling: 2.28 Wasa ionisasi ka-1: 719.7 kJ/mol ka-2: 1740 kJ/mol ka-3: 2997 kJ/mol Jeriji atom émpiris: 134 pm Jeriji kovalén 142±7 pm Garis spéktral saking rhodiumCecirén liyanan Rupa alami primordial Struktur kristal kubus mapusat muka (fcc) Kagelisan swara pales tipis 4700 m/s (ring 20 °C) Ékspansi térmal 8.2 µm/(m⋅K) (ring 25 °C) Konduktivitas térmal 150 W/(m⋅K) Resistivitas listrik 43.3 nΩ⋅m (ring 0 °C) bacakan magnétik paramagnétik [ 5] Karentanan magnétik molar 6996111000000000000♠ +111.0× 10−6 cm3 /mol (298 K)[ 6] Modulus Young 380 GPa Modulus Shear 150 GPa Modulus Bulk 275 GPa Rasio Poisson 0.26 Kakatosan Mohs 6.0 Kakatosan Vickers 1100–8000 MPa Kakatosan Brinell 980–1350 MPa Nomor CAS 7440-16-6 Lelintihan Panemuan miwah isolasi kapertamaWilliam Hyde Wollaston (1804)Isotop utama rhodium
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↑ Méija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry . 88 (3): 265–91. doi :10.1515/pac-2015-0305 .
↑ 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. Kaaksés 2007-12-10 .
↑ Rh(VII) is known in the RhO3 + cation, see "The Highest Oxidation State of Rhodium: Rhodium(VII) in [RhO3]+". Angew. Chem. Int. Ed . 2022. doi :10.1002/anie.202207688 .
↑ Lide, D. R., ed. (2005). "Magnetic susceptibility of the elements and inorganic compounds". CRC Handbook of Chemistry and Physics (PDF) (édisi ka-86th). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5 .
↑ Weast, Robert (1984). CRC, Handbook of Chemistry and Physics . Boca Raton, Florida: Chemical Rubber Company Publishing. pp. E110. ISBN 0-8493-0464-4 .
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