Francium (Fr)

Symbol Fr
Atomic Number 87
Atomic Weight (223)
Group 1 (alkali metals or hydrogen family/lithium family)
IA (Old IUPAC), IA (CAS)
Period 7
Block s

Planetary Bohr Model of Fr
Lewis Dot Diagram of Fr

Physical Properties

Density g/cm3
Atomic Volume cm3/mole
Atomic Radius 2.7 angstroms
Covalent Radius pm
Radioactive Yes

States

Melting Point 27.0 °C
Boiling Point 677.0 °C
Heat Of Fusion 2.1 kJ/mole
Heat Of Vaporization 64.0 kJ/mole

Energy

Electronegativity 0.7 (Pauling Scale)
Electron Affinity -44 kJ/mol
1st Ionization Energy 380 kJ/mol
Specific Heat Capacity J g−1 K−1
Thermal Conductivity 15.0 W·m−1·K−1

Electrons and Oxidation

Oxidation States 1
Electrons Per Shell 2 8 18 32 18 8 1
Electron Configuration [Rn] 7s1
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 7s1

Translations

English Francium
Deutsch Franzium
Lëtzebuergesch Franzium
Nederlands Francium
Afrikaans Fransium
Frysk Francium
Dansk Francium
Svenska Francium
Norsk Francium
Íslenska Fransn
Føroysk Francium
Latin Francium
Français Francium
Español Francio
Catalana Franci
Occitana Franci
Português Frncio
Galego Francio
Italiano Francio
Furlan Franci
Român Franciu
Moldavian Franciu
Armãneashte Frantsiumu
Русский ???????
Українска ???????
Byelorussian ???????
Polska Frans
Kaszëbsczi Frs
Čech Francium
Slovenský Francium
Slovenščina Francij
Hrvatska Francij
Српски ??????j??
Bosnian Francij
Македонски ????????
Български ???????
Lietuviškai Francis
Lao Francijs
Sudovian Francis
Cymraeg Ffransiwm
Gaeilge na hÉireann Frainciam
Gàidhlig na h Frainciam
Gaelg Vanninagh Frankium
Cornish Frankyum
Brezhoneg Frasiom
Ελληνική ???????
Shqip Francium
Ossetian ???????
Euskera Frantzioa
Georgian ?????????
Suomi Frankium
Eesti Frantsium
Magyar Francium
Türkçe Fransiyum
Kazakh ???????
Uzbek ???????
Tajik Franci'
Mongolian ??????
日本語 ?????? [furanshiumu]
中国话 ?
ไทย ?????????
Vietnamese Franxi
Bahasa Melayu Fransium
العربيه ???????
Il-Malti Fransjum
עברית ???????
Esperanto Francio

History

Discovered In
1939
Discovered By
Marguerite Perey
Discovered At
France
Word Origin
Named after "France"