Paladium

46
Pd
Kumpulan
10
Kala
5
Blok
d
Proton
Elektron
Neutron
46
46
60
Ciri-Ciri Am
Nombor atom
46
Berat atom
106.42
Nombor jisim
106
Kategori
Logam peralihan
Warna
Perak
Radioaktif
Tidak
Palladium was named after the asteroid Pallas; Pallas was the Greek goddess of wisdom
Struktur hablur
Pusat Wajah Kubik
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 18
Konfigurasi elektron
[Kr] 4d10
Pd
In the late 1800s, palladium was more expensive than platinum
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
12.02 g/cm3
Takat lebur
1828.05 K | 1554.9 °C | 2830.82 °F
Takat didih
3236.15 K | 2963 °C | 5365.4 °F
Haba pelakuran
16.7 kJ/mol
Haba pengewapan
380 kJ/mol
Muatan haba molar
0.244 J/g·K
Banyak pada kerak bumi
6.3×10-7%
Banyak pada alam semesta
2×10-7%
Palladium
Kredit imej: Images-of-elements
Palladium crystal
Nombor CAS
7440-05-3
PubChem CID Number
23938
Ciri-Ciri Atom
Jejari atom
137 pm
Jejari kovalen
139 pm
Keelektronegatifan
2.2 (Skala Pauling)
Kebolehan mengion
8.3369 eV
Isipadu atom
8.9 cm3/mol
Daya pengaliran terma
0.718 W/cm·K
Keadaan pengoksidaan
2, 4
Aplikasi
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.
Palladium is considered to be of low toxicity
Isotop
Isotop stabil
102Pd, 104Pd, 105Pd, 106Pd, 108Pd, 110Pd
Isotop tidak stabil
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