82
Pb
14
周期
6
ブロック
p
陽子
電子
中性子
82
82
125
一般特性
原子番号
82
原子量
207.2
質量数
207
カテゴリ
卑金属
灰白色
放射性
いいえ
From the Latin word plumbum
結晶構造
面心立方格子
歴史
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.
電子殻
2, 8, 18, 32, 18, 4
電子配置
[Xe] 4f14 5d10 6s2 6p2
Pb
Pencil leads in wooden pencils have never been made from lead
物理特性
固体
密度
11.342 g/㎝3
融点
600.61 K | 327.46 °C | 621.43 °F
沸点
2022.15 K | 1749 °C | 3180.2 °F
融解熱
4.77 kJ/mol
蒸発熱
178 kJ/mol
熱容量
0.129 J/g·K
地殻中における存在比
0.00099%
宇宙空間における存在比
1×10-6%
Ultrapure
画像の出典: Images-of-elements
Ultrapure lead bead
CAS登録番号
7439-92-1
PubChem CID Number
5352425
原子特性
原子半径
175 pm
共有結合半径
146 pm
電気陰性度
2.33 (ポーリングの値)
イオン化エネルギー
7.4167 eV
モル体積
18.17 ㎝3/mol
熱伝導率
0.353 W/㎝·K
酸化数
-4, 2, 4
用途
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 and its compounds are poisonous
同位体
安定同位体
204Pb, 206Pb, 207Pb, 208Pb
不安定同位体
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