Paladyum
46
Pd
Grup
10
Periyot
5
Blok
d
Protonlar
Elektronlar
Nötronlar
46
46
60
Temel Özellikleri
Atom numarası
46
Atom ağırlığı
106,42
Kütle Numarası
106
Kategori
Geçiş metalleri
Renk
Gümüşi
Radyoaktif
Hayir
Palladium was named after the asteroid Pallas; Pallas was the Greek goddess of wisdom
Kristal yapısı
Yüzey merkezli kübik
Tarihi
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.
Enerji seviyesi başına Elektronlar
2, 8, 18, 18
Elektron dizilimi
[Kr] 4d10
In the late 1800s, palladium was more expensive than platinum
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
12,02 g/cm3
Ergime noktası
1828,05 K | 1554,9 °C | 2830,82 °F
Kaynama noktası
3236,15 K | 2963 °C | 5365,4 °F
Ergime ısısı
16,7 kJ/mol
Buharlaşma ısısı
380 kJ/mol
Isı kapasitesi
0,244 J/g·K
Dünya kabuğundaki bulunulabilirliği
6,3×10-7%
Evrendeki bulunulabilirliği
2×10-7%
CAS Numarası
7440-05-3
PubChem CID Numarası
23938
Atom Özellikleri
Atom yarıçapı
137 pm
Kovalent yarıçapı
139 pm
Elektronegatifliği
2,2 (Pauling ölçeği)
İyonlaşma enerjisi
8,3369 eV
Atomik Hacim
8,9 cm3/mol
Isıl iletkenlik
0,718 W/cm·K
Yükseltgenme seviyeleri
2, 4
Uygulamalar
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
İzotoplar
Kararlı izotoplar
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110PdKararsız 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