Bor
5
B
Grup
13
Periyot
2
Blok
p
Protonlar
Elektronlar
Nötronlar
5
5
6
Temel Özellikleri
Atom numarası
5
Atom ağırlığı
10,811
Kütle Numarası
11
Kategori
Yarı metal
Renk
Siyah
Radyoaktif
Hayir
From the Arabic word Buraq, Persian Burah
Kristal yapısı
Basit trigonal
Tarihi
Boron compounds have been known for thousands of years, but the element was not discovered until 1808 by Sir Humphry Davy and by Gay-Lussac and Thenard.
Boron was not recognized as an element until it was isolated in 1808 by Sir Humphry Davy and by Joseph Louis Gay-Lussac and Louis Jacques Thénard.
Jöns Jakob Berzelius identified boron as an element in 1824.
Boron was not recognized as an element until it was isolated in 1808 by Sir Humphry Davy and by Joseph Louis Gay-Lussac and Louis Jacques Thénard.
Jöns Jakob Berzelius identified boron as an element in 1824.
Enerji seviyesi başına Elektronlar
2, 3
Elektron dizilimi
[He] 2s2 2p1
Boron is an essential nutrient for all green plants
Fiziksel Özellikleri
Faz
Katı
Yoğunluk
2,34 g/cm3
Ergime noktası
2349,15 K | 2076 °C | 3768,8 °F
Kaynama noktası
4200,15 K | 3927 °C | 7100,6 °F
Ergime ısısı
50 kJ/mol
Buharlaşma ısısı
507 kJ/mol
Isı kapasitesi
1,026 J/g·K
Dünya kabuğundaki bulunulabilirliği
0,00086%
Evrendeki bulunulabilirliği
1×10-7%
CAS Numarası
7440-42-8
PubChem CID Numarası
5462311
Atom Özellikleri
Atom yarıçapı
90 pm
Kovalent yarıçapı
84 pm
Elektronegatifliği
2,04 (Pauling ölçeği)
İyonlaşma enerjisi
8,298 eV
Atomik Hacim
4,6 cm3/mol
Isıl iletkenlik
0,274 W/cm·K
Yükseltgenme seviyeleri
1, 2, 3
Uygulamalar
Boron oxide is used in glassmaking and ceramics.
Borax is used in making fiberglass, as a cleansing fluid, a water softener, insecticide, herbicide and disinfectant.
Boric acid is used as a mild antiseptic and as a flame retardant.
Boron shielding is used as a control for nuclear reactors.
Borax is used in making fiberglass, as a cleansing fluid, a water softener, insecticide, herbicide and disinfectant.
Boric acid is used as a mild antiseptic and as a flame retardant.
Boron shielding is used as a control for nuclear reactors.
Elemental boron, boron oxide, boric acid, borates and many organoboron compounds are non-toxic
İzotoplar
Kararlı izotoplar
10B, 11BKararsız izotoplar
7B, 8B, 9B, 12B, 13B, 14B, 15B, 16B, 17B, 18B, 19B