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Caesium

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Caesium
Cs-TableImage.png
Atomic symbol Cs
Atomic number 55
Atomic mass 132.91
Classification Alkali metal
Melting point 28.6°C301.75 K
83.48 °F
543.15 °R
Boiling point 671°C944.15 K
1,239.8 °F
1,699.47 °R
Density 1.873 g/cm³
Electron shell 055 Caesium.svg.png
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