フッ素
9
F
族
17
周期
2
ブロック
p
陽子
電子
中性子
9
9
10
一般特性
原子番号
9
原子量
18.9984032
質量数
19
カテゴリ
ハロゲン
色
無色
放射性
いいえ
From the Latin and French fluere, flow or flux
結晶構造
底心 単斜晶
歴史
In 1529, Georigius Agricola described the use of fluorspar as a flux.
In 1670 Heinrich Schwandhard found that glass was etched when exposed to fluorspar treated with acid.
In 1810, French scientist Andre-Marie Ampere proposed that fluoric acid was a compound of hydrogen with a new element.
The element was finally isolated in 1886 by Henri Moissan.
In 1670 Heinrich Schwandhard found that glass was etched when exposed to fluorspar treated with acid.
In 1810, French scientist Andre-Marie Ampere proposed that fluoric acid was a compound of hydrogen with a new element.
The element was finally isolated in 1886 by Henri Moissan.
電子殻
2, 7
電子配置
[He] 2s2 2p5
Fluorine reacts violently with water to produce oxygen
物理特性
相
気体
密度
0.001696 g/㎝3
融点
53.53 K | -219.62 °C | -363.32 °F
沸点
85.03 K | -188.12 °C | -306.62 °F
融解熱
0.26 kJ/mol
蒸発熱
3.27 kJ/mol
熱容量
0.824 J/g·K
地殻中における存在比
0.054%
宇宙空間における存在比
0.00004%
画像の出典: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
CAS登録番号
7782-41-4
PubChem CID番号
24524
原子特性
原子半径
42 pm
共有結合半径
64 pm
電気陰性度
3.98 (ポーリングの値)
イオン化エネルギー
17.4228 eV
モル体積
17.1 ㎝3/mol
熱伝導率
0.000279 W/㎝·K
酸化数
-1
用途
Compounds of fluorine, including sodium fluoride, are used in toothpaste and in drinking water to prevent dental cavities.
Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) now serve as replacements for CFC refrigerants.
Fluorine and its compounds are used in processing nuclear fuel.
Hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) now serve as replacements for CFC refrigerants.
Fluorine and its compounds are used in processing nuclear fuel.
Fluorine is highly toxic and corrosive
同位体
安定同位体
19F不安定同位体
14F, 15F, 16F, 17F, 18F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F