Symbol	F	Atomic radius: pm	71	Fusion: kJ/Mole	0.51
Name	Fluorine	Ionic radius: pm	(-1)133	Boiling point: °C	-188
Atomic number	9	Electron affinity	3.40	Melting point: °C	-220tp
Atomic weight	19.00	1st  ion potential	17.42	Specific Heat Cap: J/(g K)	0.82
Classification	Non-metal	Natural form	Gas(F2)	Thermal Cond: W/(cm K)	<0.001
Configuration	1s22s2p5	Crystal structure	-	Electrical Cond	-
Oxidation states	-1	Density	1.70	Abundance: mg/kg-crust	585
Electronegativity	3.98	Vaporization: kJ/Mole	6.62
The French chemist, Henri Moissan, first isolated fluorine in 1886 by electrolysis.  Nearly three-fourths of a century earlier André-Marie Ampère had suggested this method and named the predicted gas fluorine.			Uses - refrigerants, fluorocarbons, tooth decay prevention, toothpaste