Palladiy
46
Pd
Guruh
10
Davr
5
Block
d
Protonlar
Elektronlar
Neytronlar
46
46
60
General Properties
Atom raqami
46
Atom massasi
106,42
Mass Number
106
Turkum
Oʻtish metallar
Ranggi
Silver
Radioaktivlik
Yoʻq
Palladium was named after the asteroid Pallas; Pallas was the Greek goddess of wisdom
Crystal Structure
Face Centered Cubic
Tarix
Palladium was discovered in 1803, in London, by English chemist William Hyde Wollaston.
He examined the residues left from platinum after dissolving it in aqua regia, a concentrated solution of hydrochloric and nitric acids.
He then isolated palladium in a series of chemical reactions.
He examined the residues left from platinum after dissolving it in aqua regia, a concentrated solution of hydrochloric and nitric acids.
He then isolated palladium in a series of chemical reactions.
Electrons per shell
2, 8, 18, 18
Elektron konfiguratsiyasi
[Kr] 4d10
In the late 1800s, palladium was more expensive than platinum
Physical Properties
Phase
Qattiq modda
Zichlik
12,02 g/cm3
Erish harorati
1828,05 K | 1554,9 °C | 2830,82 °F
Qaynash harorati
3236,15 K | 2963 °C | 5365,4 °F
Heat of Fusion
16,7 kJ/mol
Heat of Vaporization
380 kJ/mol
Solishtirma issiqlik sigʻimi
0,244 J/g·K
Abundance in Earth's crust
6,3×10-7%
Abundance in Universe
2×10-7%
CAS Number
7440-05-3
PubChem CID Number
23938
Atomic Properties
Atom radiusi
137 pm
Kovalentlik radiusi
139 pm
Elektrmanfiylik
2,2 (Poling boʻyicha)
Ionization Potential
8,3369 eV
Molyar hajm
8,9 cm3/mol
Issiqlik oʻtkazuvchanlik
0,718 W/cm·K
Oksidlanish darajasi
2, 4
Applications
The largest use of palladium is in catalytic converters in the automobile industry.
Finely divided palladium is a good catalyst and is used for hydrogenation and dehydrogenation reactions.
The metal is used in dentistry, watch making, and in making surgical instruments and electrical contacts.
Finely divided palladium is a good catalyst and is used for hydrogenation and dehydrogenation reactions.
The metal is used in dentistry, watch making, and in making surgical instruments and electrical contacts.
Palladium is considered to be of low toxicity
Izotoplar
Barqaror izotoplar
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110PdBeqaror izotoplar
91Pd, 92Pd, 93Pd, 94Pd, 95Pd, 96Pd, 97Pd, 98Pd, 99Pd, 100Pd, 101Pd, 103Pd, 107Pd, 109Pd, 111Pd, 112Pd, 113Pd, 114Pd, 115Pd, 116Pd, 117Pd, 118Pd, 119Pd, 120Pd, 121Pd, 122Pd, 123Pd, 124Pd