Uses of Rubidium and Erbium

Rubidium

Erbium

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Uses

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.

It has a tendency to get tarnished in the open air, but when alloyed with elements like erbium, vanadium, its hardness levels decreases.
Its compounds like Erbium oxide is used in safety glasses of welders and metal workers.

Chemical Industry

Alloys

Mildly Toxic

✔✘

0.00 Blood/mg dm-3

0.00 p.p.m.