Periodic Table of Elements showing Fluorine halogen elements


Atomic Number9
Molar Mass19 gmol-1
Electron Configuration[He]2s22p5
Normal Stategas nonmetal
Density @STP1.7x10-3 g cm-3
Melting Point-220oC
Boiling Point-188oC
Stable Isotopes19F
Atomic Radius64 pm
Ionic Radius133 (1-) pm
Electronegativity (Pauling)4
Ionization Energy (1st)1681 kJ mol-1
Ionization Energy (2nd)3374 kJ mol-1
Ionization Energy (3rd)6050 kJ mol-1
Molar Heat Capacity22.7 J K-1mol-1
Standard Molar Entropy158.8 J K-1mol-1
Enthalpy of Fusion5.1 kJ mol-1
Enthalpy of Vapourization6.548 kJ mol-1
[Back to Periodic table]

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