Uses of Cesium and Rubidium

Cesium

Rubidium

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Uses

The most common use of cesium metal is as a drilling fluid. It is also used in optical glass manufacturing.
In vacuum tubes and radiation monitor equipment this metal is used as a catalyst promoter.

Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry

Alloys

Mildly Toxic

✔✘

0.00 Blood/mg dm-3

0.05 p.p.m.

Rubidium's main application is in the glass manufacturing.
Rubidium can very easily get ionized and hence it is used for ion engines, but it is still less efficient than that of Caesium.

Alloys, Research Purposes

Non Toxic

✔✘

2.49 Blood/mg dm-3

5.00 p.p.m.