Platina

78
Pt
Golongan
10
Periode
6
Blok
d
Proton
Elektron
Neutron
78
78
117
Sifat Umum
Nomor atom
78
Massa atom
195,084
Nomor massa
195
Kategori
Logam transisi
Warna
Abu-abu
Radioaktif
Tidak
From the Spanish word platina, meaning silver
Struktur kristal
Kubik Berpusat-muka
Sejarah
Platinum was first used by pre-Columbian South American natives to produce artifacts.

Antonio de Ulloa published his findings about platinum in 1748, but Sir Charles Wood also investigated the metal in 1741.

First reference to it as a new metal was made by William Brownrigg in 1750.
Elektron per kulit
2, 8, 18, 32, 17, 1
Konfigurasi elektron
[Xe] 4f14 5d9 6s1
Pt
Platinum exists in higher abundances on the Moon and in meteorites
Sifat Fisika
Fase
Solid
Kepadatan
21,45 g/cm3
Titik lebur
2041,45 K | 1768,3 °C | 3214,94 °F
Titik didih
4098,15 K | 3825 °C | 6917 °F
Kalor peleburan
20 kJ/mol
Kalor penguapan
490 kJ/mol
Kapasitas kalor molar
0,133 J/g·K
Kelimpahan di kerak bumi
3,7×10-6%
Kelimpahan di alam semesta
5×10-7%
A
Kredit Gambar: Wikimedia Commons (Alchemist-hp)
A native platinum nugget
Nomor CAS
7440-06-4
PubChem CID Number
23939
Sifat Atom
Jari-jari atom
139 pm
Jari-jari kovalen
136 pm
Elektronegativitas
2,28 (Skala Pauling)
Potensi Ionisasi
8,9587 eV
Volume atom
9,10 cm3/mol
Kondusivitas termal
0,716 W/cm·K
Bilangan oksidasi
2, 4, 5, 6
Aplikasi
The most common use of platinum is as a catalyst in chemical reactions.

Platinum is used in jewelry, decoration and dental work.

Platinum-cobalt, an alloy of roughly three parts platinum and one part cobalt, is used to make relatively strong permanent magnets.

Platinum-based anodes are used in ships, pipelines, and steel piers.
Platinum is considered to be non-toxic
Isotop
Isotop stabil
192Pt, 194Pt, 195Pt, 196Pt, 198Pt
Isotop tidak stabil
166Pt, 167Pt, 168Pt, 169Pt, 170Pt, 171Pt, 172Pt, 173Pt, 174Pt, 175Pt, 176Pt, 177Pt, 178Pt, 179Pt, 180Pt, 181Pt, 182Pt, 183Pt, 184Pt, 185Pt, 186Pt, 187Pt, 188Pt, 189Pt, 190Pt, 191Pt, 193Pt, 197Pt, 199Pt, 200Pt, 201Pt, 202Pt