Cesium

usgb/ˈsiːziəm/
Noun

Cesium is a chemical element with the symbol Cs and atomic number 55, known for being one of the most electropositive and alkaline metals.

Cesium is used in atomic clocks, providing highly accurate timekeeping.
Visual representation of "cesium" - Cesium is a chemical element with the symbol Cs and atomic number 55, known for being one of the most electropositive and alkaline metals.

Often appears as...

  • atomic cesium
  • cesium vapor

Usage tips

Neutral

element, periodic table, atomic number

Definition 1 of 1
Visual representation of "cesium"
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Science

Understanding the properties and uses of cesium requires a background in chemistry.

Illustration for Science
In high school, I learned about cesium in my chemistry class.
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Precision

Cesium is essential for maintaining accurate time in global positioning systems.

Illustration for Precision
GPS satellites use cesium-based atomic clocks to keep time.
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Electropositivity

Cesium is one of the most electropositive elements in the periodic table.

Illustration for Electropositivity
It readily loses its outer electron, making it a strong reducing agent.
Visual representation of the word "Cesium"

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