Krypton (Kr)

General Properties

Symbol Kr
Atomic Number 36
Atomic Weight 83.798
Group
18 (noble gases or helium family/neon family)
VIII (IUPAC), VIIIA (CAS)
Gas, Diamagnetic, Noble Gas, Nonmetal, Stable, Natural
Period 4
Block p

Physical Properties

Density 0.00374 g/cm3
Atomic Volume 32.2 cm3/mole
Atomic Radius 1.03 angstroms
Covalent Radius 110 pm
Crust Abundance 1.5E-8%
Crystal Structure Cubic: Face centered
Color Colorless

Energy

Electronegativity 3.0 (Pauling Scale)
Electron Affinity 0 kJ/mol
1st Ionization Energy 1356 kJ/mol
2nd Ionization Energy 2350.4 kJ/mol
3rd Ionization Energy 3565 kJ/mol
4th Ionization Energy 5070 kJ/mol
5th Ionization Energy 6240 kJ/mol
6th Ionization Energy 7570 kJ/mol
7th Ionization Energy 10710 kJ/mol
8th Ionization Energy 12138 kJ/mol
9th Ionization Energy 22274 kJ/mol
10th Ionization Energy 25880 kJ/mol
11th Ionization Energy 29700 kJ/mol
12th Ionization Energy 33800 kJ/mol
13th Ionization Energy 37700 kJ/mol
14th Ionization Energy 43100 kJ/mol
15th Ionization Energy 47500 kJ/mol
16th Ionization Energy 52200 kJ/mol
17th Ionization Energy 57100 kJ/mol
18th Ionization Energy 61800 kJ/mol
19th Ionization Energy 75800 kJ/mol
20th Ionization Energy 80400 kJ/mol
21st Ionization Energy 85300 kJ/mol
22nd Ionization Energy 90400 kJ/mol
23rd Ionization Energy 96300 kJ/mol
24th Ionization Energy 101400 kJ/mol
25th Ionization Energy 111100 kJ/mol
26th Ionization Energy 116290 kJ/mol
27th Ionization Energy 282500 kJ/mol
28th Ionization Energy 296200 kJ/mol
29th Ionization Energy 311400 kJ/mol
30th Ionization Energy 326200 kJ/mol
Specific Heat Capacity 0.248 J g−1 K−1
Thermal Conductivity 0.00949 W·m−1·K−1

Electrons & Oxidation

Oxidation States 0
Electrons Per Shell 2 8 18 8
Electron Configuration [Ar] 3d10 4s2 4p6
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
 
 
 
 
 
4f
 
 
 
 
 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Krypton (Kr)
Lewis Dot Diagram of Krypton (Kr)
Description
Colorless, odorless, tasteless rare noble gas.
Uses
Used in lighting products. Some is used as inert filler-gas in incandescent bulbs. Some is mixed with argon in fluorescent lamps. The most important use is in flashing stroboscopic lamps that outline airport runways.
Sources
Forms 1 millionth of the atmosphere. Obtained from production of liquid air.
Pronounciation (English)
KRIP-ton

Translations

Afrikaans Kripton
Aragonese Criptón
العربية كربتون
Armãneashte Cripton
asturianu Criptón
azərbaycan dili Kripton
български Криптон
বাংলা ক্রিপ্টন
brezhoneg Kripton
bosanski Kripton
Byelorussian Крыптон
Cebuano Kripton
čeština Krypton
Chuvash Криптон
Cymraeg Criptó
dansk Krypton
Deutsch Krypton
Ελληνικά Κρυπτο
English Krypton
esperanto Kriptono
español Criptón
eesti Krüptoon
euskara Kriptona
فارسی کریپتون
suomi Krypton
føroyskt Krypton
français Krypton
furlan Criton
West-Frysk Krypton
Gaeilge Crioptón
Gàidhlig Criopton
galego Cripton
ગુજરાતી ક્રિપ્ટૉનનો
Gaelg Krypton
Hakka Chinese Khiet (氪)
עברית קריפטון
हिन्दी क्रिप्टन
hrvatski Kripton
magyar Kripton
հայերեն Կրիպտոն
Indonesia Kripton
íslenska Krypton
italiano Kripto
日本語 クリプトン
ქართული კრიპტონი
کٲشُر Kriptón
қазақ тілі Криптон
한국어 크립톤
Kurdish Kripton
Komi Криптон
kernewek Crypton
кыргызча Криптон
Latin Krypton
Lëtzebuergesch Krypton
Lombard Cript
lingála Kliptoni
lietuvių Kriptonas
latviešu Kriptons
Mari Криптон
Maori Krypton
македонски Криптон
മലയാളം ക്രിപ്റ്റോണ്‍
монгол Криптон
Мокшан Криптон
Bahasa Melayu Kripton
Malti Kripton
Nahuatl Kriptón
Nederlands Krypton
norsk Krypton
Occitan Cripton
ирон Криптон
polski Krypton
português Krípton
Runasimi Kriptun
română Kripton
русский Криптон
slovenčina Kryptón
slovenščina Kripton
Samoan Kryptoni
Samogitian Kriptuons
shqip Kripton, ²Kryptoni
српски Криптон
Southern Sotho Kriptone
svenska Krypton
Kiswahili Kriptoni
தமிழ் கிரிப்டோன்
Tajik Криптон
ไทย คริปทอน
Türkçe Kripton
ئۇيغۇرچە كرىپتون
українська Криптон
o‘zbek Kripton
Tiếng Việt Kripton
Võro Krüptoon
中文

History

Discovered In
1898
Discovered By
Sir William Ramsay, Morris W. Travers
Discovered At
Great Britain
Word Origin
From the Greek word "kryptos" meaning "hidden"