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Caesium
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Chemical element with atomic number 55 (Cs)
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Wikipedia

Caesium (IUPAC spelling; also spelled cesium in American English) is a chemical element; it has symbol Cs and atomic number 55. It is a soft, silvery-golden alkali metal with a melting point of 28.5 °C (83.3 °F; 301.6 K), which makes it one of only five elemental metals that are liquid at or near room temperature. Caesium has physical and...

Instance of
Chemical element
lithophile
Subclass of
Alkali metal
Metal
S-block
Part of
group 1
Different from
Cerium
References
Wikidata