Basic Information

Name: Fluorine 
Symbol: F 
Atomic Number: 9 
Atomic Mass: 18.998404 amu 
Melting Point: -219.62 °C (53.530006 K, -363.31598 °F) 
Boiling Point: -188.14 °C (85.01 K, -306.652 °F) 
Number of Protons/Electrons: 9 
Number of Neutrons: 10 
Classification: Halogen 
Crystal Structure: Cubic 
Density @ 293 K: 1.696 g/cm3 
Color: Greenish
Date of Discovery: 1886 
Discoverer: Joseph Henri Moissan 
Name Origin: From the Latin word fluo (flow) 
Uses: Refrigerants 
Obtained From: mineral fluorite