Chemistry

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The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clocks is.

Califonrium

Calcium

Cerium

Cesium

Explanation:

Caesium (IUPAC spelling) (also spelled cesium in American English) is a chemical element with the 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), which makes it one of only five elemental metals that are liquid at or near room temperature.

By: kamaljeet kaur

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