Rodium

45
Rh
Kumpulan
9
Kala
5
Blok
d
Proton
Elektron
Neutron
45
45
58
Ciri-Ciri Am
Nombor atom
45
Berat atom
102.9055
Nombor jisim
103
Kategori
Logam peralihan
Warna
Perak
Radioaktif
Tidak
From the Greek word rhodon, rose
Struktur hablur
Pusat Wajah Kubik
Sejarah
Rhodium was discovered in 1803 by William Hyde Wollaston in London.

He used crude platinum ore presumably obtained from South America.

The introduction of the three way catalytic converter by Volvo in 1976 increased the demand for rhodium.
Bilangan elektron per petala
2, 8, 18, 16, 1
Konfigurasi elektron
[Kr] 4d8 5s1
Rh
Rhodium metal does not normally form an oxide, even when heated
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
12.41 g/cm3
Takat lebur
2237.15 K | 1964 °C | 3567.2 °F
Takat didih
3968.15 K | 3695 °C | 6683 °F
Haba pelakuran
21.7 kJ/mol
Haba pengewapan
495 kJ/mol
Muatan haba molar
0.243 J/g·K
Banyak pada kerak bumi
7×10-8%
Banyak pada alam semesta
6×10-8%
Rhodium
Kredit imej: Wikimedia Commons (Alchemist-hp)
Rhodium powder
Nombor CAS
7440-16-6
PubChem CID Number
23948
Ciri-Ciri Atom
Jejari atom
134 pm
Jejari kovalen
142 pm
Keelektronegatifan
2.28 (Skala Pauling)
Kebolehan mengion
7.4589 eV
Isipadu atom
8.3 cm3/mol
Daya pengaliran terma
1.5 W/cm·K
Keadaan pengoksidaan
-1, 1, 2, 3, 4, 5, 6
Aplikasi
The element's major use is as one of the catalysts in the three-way catalytic converters in automobiles.

Rhodium is used as an alloying agent for hardening and improving the corrosion resistance of platinum and palladium.

It is also used as a filter in mammography systems because of the characteristic X-rays it produces.

Rhodium is also used for jewelry and for decorations.
Rhodium is considered to be non-toxic
Isotop
Isotop stabil
103Rh
Isotop tidak stabil
89Rh, 90Rh, 91Rh, 92Rh, 93Rh, 94Rh, 95Rh, 96Rh, 97Rh, 98Rh, 99Rh, 100Rh, 101Rh, 102Rh, 104Rh, 105Rh, 106Rh, 107Rh, 108Rh, 109Rh, 110Rh, 111Rh, 112Rh, 113Rh, 114Rh, 115Rh, 116Rh, 117Rh, 118Rh, 119Rh, 120Rh, 121Rh, 122Rh