Fluor

9
F
Golongan
17
Periode
2
Blok
p
Proton
Elektron
Neutron
9
9
10
Sifat Umum
Nomor atom
9
Massa atom
18,9984032
Nomor massa
19
Kategori
Halogen
Warna
Tak berwarna
Radioaktif
Tidak
Dari bahasa Latin dan Prancis fluere, fluks atau aliran
Struktur kristal
Monoklinik Berpusat-dasar
Sejarah
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.
Elektron per kulit
2, 7
Konfigurasi elektron
[He] 2s2 2p5
F
Fluorine reacts violently with water to produce oxygen
Sifat Fisika
Fase
Gas
Kepadatan
0,001696 g/cm3
Titik lebur
53,53 K | -219,62 °C | -363,32 °F
Titik didih
85,03 K | -188,12 °C | -306,62 °F
Kalor peleburan
0,26 kJ/mol
Kalor penguapan
3,27 kJ/mol
Kapasitas kalor molar
0,824 J/g·K
Kelimpahan di kerak bumi
0,054%
Kelimpahan di alam semesta
0,00004%
Fluorine
Kredit Gambar: Images-of-elements
Fluorine gas, but only as photomontage, because fluorine reacts even with glass
Nomor CAS
7782-41-4
PubChem CID Number
24524
Sifat Atom
Jari-jari atom
42 pm
Jari-jari kovalen
64 pm
Elektronegativitas
3,98 (Skala Pauling)
Potensi Ionisasi
17,4228 eV
Volume atom
17,1 cm3/mol
Kondusivitas termal
0,000279 W/cm·K
Bilangan oksidasi
-1
Aplikasi
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.
Fluorine is highly toxic and corrosive
Isotop
Isotop stabil
19F
Isotop tidak stabil
14F, 15F, 16F, 17F, 18F, 20F, 21F, 22F, 23F, 24F, 25F, 26F, 27F, 28F, 29F, 30F, 31F