Timbal
82
Pb
Golongan
14
Periode
6
Blok
p
Proton
Elektron
Neutron
82
82
125
Sifat Umum
Nomor atom
82
Massa atom
207,2
Nomor massa
207
Kategori
Logam pasca-transisi
Warna
Biru Keabu-abuan
Radioaktif
Tidak
From the Latin word plumbum
Struktur kristal
Kubik Berpusat-muka
Sejarah
Metallic lead beads dating back to 6400 BC have been found in Çatalhöyük in modern-day Turkey.
The Romans also used lead in molten form to secure iron pins that held together large limestone blocks in certain monumental buildings.
In alchemy, lead was thought to be the oldest metal and was associated with the planet Saturn.
The Romans also used lead in molten form to secure iron pins that held together large limestone blocks in certain monumental buildings.
In alchemy, lead was thought to be the oldest metal and was associated with the planet Saturn.
Elektron per kulit
2, 8, 18, 32, 18, 4
Konfigurasi elektron
[Xe] 4f14 5d10 6s2 6p2
Pencil leads in wooden pencils have never been made from lead
Sifat Fisika
Fase
Solid
Kepadatan
11,342 g/cm3
Titik lebur
600,61 K | 327,46 °C | 621,43 °F
Titik didih
2022,15 K | 1749 °C | 3180,2 °F
Kalor peleburan
4,77 kJ/mol
Kalor penguapan
178 kJ/mol
Kapasitas kalor molar
0,129 J/g·K
Kelimpahan di kerak bumi
0,00099%
Kelimpahan di alam semesta
1×10-6%
Nomor CAS
7439-92-1
Nomor PubChem CID
5352425
Sifat Atom
Jari-jari atom
175 pm
Jari-jari kovalen
146 pm
Elektronegativitas
2,33 (Skala Pauling)
Potensi Ionisasi
7,4167 eV
Volume atom
18,17 cm3/mol
Kondusivitas termal
0,353 W/cm·K
Bilangan oksidasi
-4, 2, 4
Aplikasi
Large quantities of lead, both as the metal and as the dioxide, are used in storage batteries.
Lead is used as electrodes in the process of electrolysis.
It is added to brass to reduce machine tool wear.
Lead, in either pure form or alloyed with tin, or antimony is the traditional material for bullets and shot in firearms use.
Lead is used as electrodes in the process of electrolysis.
It is added to brass to reduce machine tool wear.
Lead, in either pure form or alloyed with tin, or antimony is the traditional material for bullets and shot in firearms use.
Lead and its compounds are poisonous
Isotop
Isotop stabil
204Pb, 206Pb, 207Pb, 208PbIsotop tidak stabil
178Pb, 179Pb, 180Pb, 181Pb, 182Pb, 183Pb, 184Pb, 185Pb, 186Pb, 187Pb, 188Pb, 189Pb, 190Pb, 191Pb, 192Pb, 193Pb, 194Pb, 195Pb, 196Pb, 197Pb, 198Pb, 199Pb, 200Pb, 201Pb, 202Pb, 203Pb, 205Pb, 209Pb, 210Pb, 211Pb, 212Pb, 213Pb, 214Pb, 215Pb