Rodiy
45
Rh
Guruh
9
Davr
5
Block
d
Protonlar
Elektronlar
Neytronlar
45
45
58
General Properties
Atom raqami
45
Atom massasi
102,9055
Mass Number
103
Turkum
Oʻtish metallar
Ranggi
Silver
Radioaktivlik
Yoʻq
From the Greek word rhodon, rose
Crystal Structure
Face Centered Cubic
Tarix
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.
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.
Electrons per shell
2, 8, 18, 16, 1
Elektron konfiguratsiyasi
[Kr] 4d8 5s1
Rhodium metal does not normally form an oxide, even when heated
Physical Properties
Phase
Qattiq modda
Zichlik
12,41 g/cm3
Erish harorati
2237,15 K | 1964 °C | 3567,2 °F
Qaynash harorati
3968,15 K | 3695 °C | 6683 °F
Heat of Fusion
21,7 kJ/mol
Heat of Vaporization
495 kJ/mol
Solishtirma issiqlik sigʻimi
0,243 J/g·K
Abundance in Earth's crust
7×10-8%
Abundance in Universe
6×10-8%
CAS Number
7440-16-6
PubChem CID Number
23948
Atomic Properties
Atom radiusi
134 pm
Kovalentlik radiusi
142 pm
Elektrmanfiylik
2,28 (Poling boʻyicha)
Ionization Potential
7,4589 eV
Molyar hajm
8,3 cm3/mol
Issiqlik oʻtkazuvchanlik
1,5 W/cm·K
Oksidlanish darajasi
-1, 1, 2, 3, 4, 5, 6
Applications
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 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
Izotoplar
Barqaror izotoplar
103RhBeqaror izotoplar
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