Fluorine or F

• atomic number is 9

• atomic weight is 18.9984

• color is Colorless

• state at 298.15°k is Gas

• classification is Nonmetallic

• date of discovery is 1886

• density kg/m^3 is 1.696

• melting point is 53.63

• boiling point is 211.3 K

• group is Halogen

• Number of neutron is 10