Ólom
82
Pb
Csoport
14
Periódus
6
Mező
p
Protonok
Elektronok
Neutronok
82
82
125
Általános Tulajdonságok
Rendszám
82
Atomtömeg
207,2
Tömegszám
207
Kategória
Későátmeneti fémek
Szín
Palaszürke
Radioaktivitás
Nem
A latin plumbum, vezet szóból
Kristályrácstípus
Lapközepes kockarács
Története
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.
Elektronok száma héjanként
2, 8, 18, 32, 18, 4
Elektronkonfiguráció
[Xe] 4f14 5d10 6s2 6p2
Pencil leads in wooden pencils have never been made from lead
Fizikai Tulajdonságok
Halmazállapot
Szilárd
Sűrűség
11,342 g/cm3
Olvadáspont
600,61 K | 327,46 °C | 621,43 °F
Forráspont
2022,15 K | 1749 °C | 3180,2 °F
Olvadáshő
4,77 kJ/mol
Párolgáshő
178 kJ/mol
Fajlagos hőkapacitás
0,129 J/g·K
Gyakoriság a Földön
0,00099%
Gyakoriság az Univerzumban
1×10-6%
CAS-szám
7439-92-1
PubChem CID azonosító
5352425
Atomi Tulajdonságok
Atomsugár
175 pm
Kovalenssugár
146 pm
Elektronegativitás
2,33 (Pauling skálán)
Ionizációs energia
7,4167 eV
Atomtérfogat
18,17 cm3/mol
Hővezetési tényező
0,353 W/cm·K
Oxidációs állapotok
-4, 2, 4
Felhasználás
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.
Az ólom és vegyületei mérgezőek
Izotópok
Stabil izotópok
204Pb, 206Pb, 207Pb, 208PbInstabil izotópok
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