Alkali metal/Properties

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Material==>
Property
V 		Lithium
 Sodium
 Potassium
 Rubidium
 Caesium
 Francium
Electronegativity 0.98 0.93 0.82 0.82 0.79 0.7
Melting point 180.5 °C 97.8 °C 63.5 °C 39.3 °C 28.5 °C 27 °C
Boiling point 1342 °C 883 °C 759 °C 688 °C 671 °C 677 °C


Low ionization energies result in Alkali metals having metallic properties and relatively high reactivities[1].

  1. ↑ http://chemistry.about.com/od/elementgroups/a/alkalimetals.htm
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