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Reference



Alkali Metals
Chemical Properties, Physical Properties and General Information


Radioactive Material Sign
Radioactive Natural Element
Radioactive Material Sign
Radioactive Synthetic Element
Toxic Material Sign
Toxic Element
Group 1 of the Periodic Table
Name Sym. No. Atomic
Weight
Melting
Point
Boiling
Point
Phase Density Valence
Electrons
Oxidation
States
Lithium Li 3 6.941 180.54 C 1342 C Solid 0.534 g/cm3 2s1 +1 (strongly basic oxide)
Sodium Na 11 22.98976928 97.72 C 883 C Solid 0.968 g/cm3 3s1 +1 (strongly basic oxide)
Potassium K 19 39.0983 63.38 C 759 C Solid 0.89 g/cm3 4s1 +1 (strongly basic oxide)
Rubidium Rb 37 85.4678 39.31 C 688 C Solid 1.532 g/cm3 5s1 +1 (strongly basic oxide)
Cesium Cs 55 132.9054519 28.44 C 671 C Solid 1.93 g/cm3 6s1 +1 (strongly basic oxide)
Francium Radioactive Natural Element Fr 87 223 27 C 677 C Solid 1.87 g/cm3 7s1 +1 (strongly basic oxide)

Alkali Metals: Group 1 of the periodic table, homologous, highly reactive due to only one electron in their outer shell, due to their reactivity not found in elemental form in nature, malleable, ductile, good conductors of heat and electricity, soft, tarnish easily, low melting points and densities, can explode if they are exposed to water




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