caesium
Pronunciation:
/ˈsiːzi.əm/noun
Definitions
The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal.
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/ˈsiːzi.əm/Definitions
The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal.