Fluorine

ElementFluorineSymbolF
Atomic Number9Molar Mass19 gmol-1
Electron Configuration[He]2s22p5Normal Stategas nonmetal
Density @STP1.7x10-3 g cm-3Melting Point-220oC
Boiling Point-188oCStable Isotopes19F
Atomic Radius64 pmIonic Radius133 (1-) pm
Electronegativity (Pauling)4Ionization Energy (1st)1681 kJ mol-1
Ionization Energy (2nd)3374 kJ mol-1Ionization Energy (3rd)6050 kJ mol-1
Molar Heat Capacity22.7 J K-1mol-1Standard Molar Entropy158.8 J K-1mol-1
Enthalpy of Fusion5.1 kJ mol-1Enthalpy of Vapourization6.548 kJ mol-1
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