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Chemistry LibreTexts

2.2: The Physical Properties of Hydrogen

  • Page ID
    212617
  • Chemical Symbol H
    Atomic number 1
    Electron configuration 1s1
    Atomic weight 1.00794
    Melting point -259 C
    Boiling point -253 C
    Density (gas) 0.090 g/L
    Density (liquid) 0.70g/L
    Ionization potential

    13.598 eV

    Pauling electronegativity 2.1
    Ionic radius (H-) 1.54 Å
    van der Waal radius 1.2 Å
    Explosive limit 4 - 75%
    Ignition temperature 585 C
    Table \(\PageIndex{2}\).1: Physical properties of hydrogen.
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