Bor (B)

General Properties

Symbol B
Atomic Number 5
Atomic Weight 10.811
Group
13 (boron family)
IIIB (IUPAC), IIIA (CAS)
Solid, Diamagnetic, Insulator, Stable, Natural, Metalloid
Period 2
Block p

Physical Properties

Density 2.34 g/cm3
Atomic Volume 4.6 cm3/mole
Atomic Radius 0.98 angstroms
Covalent Radius 82 pm
Crust Abundance 0.00086%
Crystal Structure Rhombohedral
Color Black

Energy

Electronegativity 2.0 (Pauling Scale)
Electron Affinity 26.7 kJ/mol
1st Ionization Energy 801 kJ/mol
2. Ionization Energy 2427.1 kJ/mol
3. Ionization Energy 3659.7 kJ/mol
4. Ionization Energy 25025.8 kJ/mol
5. Ionization Energy 32826.7 kJ/mol
Specific Heat Capacity 1.026 J g−1 K−1
Thermal Conductivity 27.0 W·m−1·K−1

Electrons & Oxidation

Oxidation States 3
Electrons Per Shell 2 3
Electron Configuration [He] 2s2 2p1
1s2 2s2 2p1
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿ 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Bor (B)
Lewis Dot Diagram of Bor (B)
Description
Hard, brittle, lustrous black semimetal. Exists in the earth's crust at an average proportion of about 10 parts per million.
Uses
Used with titanium & tungsten to make heat resistant alloys for jets & rockets.
Sources
Obtained from kernite, a kind of borax (Na2B4O7.10H2O). High purity boron is produced by electrolysis of molten potassium fluroborate and potassium chloride (KCl).
Pronounciation (English)
BO-ron

Translations

Afrikaans Boor
Aragonese Boro
العربية بورون
Armãneashte Boru
asturianu Boru
azərbaycan dili Bor
български Бор
বাংলা বোরন
brezhoneg Bor
bosanski Bor
Byelorussian Бор
Cebuano Boro
čeština Bor
Chuvash Бор
Cymraeg Bor
dansk Bor
Deutsch Bor
Ελληνικά Βοριο
English Boron
esperanto Borio
español Boro
eesti Boor
euskara Boroa
فارسی بور
suomi Boori
føroyskt Bor
français Boron
furlan Bôr
West-Frysk Boar
Gaeilge Bórón
Gàidhlig Bòron
galego Boro
ગુજરાતી બોરૉનનો
Gaelg Boron
Hakka Chinese Phìn (硼)
עברית בור
हिन्दी बोरॉन्
hrvatski Bor
magyar Bór
հայերեն Բոր
Indonesia Boron
íslenska Bór
italiano Boro
日本語 ホウ素
ქართული ბორი
کٲشُر Bòr
қазақ тілі Бор
한국어 붕소
Kurdish Boron
Komi Бор
kernewek Boron
кыргызча Бор
Latin Borium
Lëtzebuergesch Bor
Lombard Bòor
lingála Bolo
lietuvių Boras
latviešu Bors
Mari Бор
Maori Pūtiwha
македонски Бор
മലയാളം ബോറോണ്‍
монгол Бор
Мокшан Бора
Bahasa Melayu Boron
Malti Boron, ²Boru
Nahuatl Xacoiztatl
Nederlands Boor
norsk Bor
Occitan Bòr
ирон Бор
polski Bor
português Boro
Runasimi Boru
română Bor
русский Бор
slovenčina Bór
slovenščina Bor
Samoan Borimi
Samogitian Buors
shqip Bor
српски Бор
Southern Sotho Borone
svenska Bor
Kiswahili Boroni
தமிழ் போரோன்
Tajik Бор
ไทย โบรอน
Türkçe Bor
ئۇيغۇرچە بور
українська Бор
o‘zbek Bor
Tiếng Việt Bo
Võro Buur
中文

History

Discovered In
1808
Discovered By
Sir Humphry Davy, Joseph Louis Gay-Lussac, and Louis Jacques Thénard
Discovered At
England, France
Word Origin
From the Arabic word "buraq" and the Persian word "burah"