The colour of stained glass windows are produced by the presence of metal ions

The naturally occurring colourless crystalline form of aluminium oxide (Al₂O₃) is called

Group II metals are called

This reaction is called.

To reduce, Zinc oxide to Zinc, the material used is

The intensity of the flame colour of alkali metals can be measured using

Zn + CuSO₄ → ZnSO₄ + Cu. This is an example for.

The catalyst used in the hydrogenation of fats to make margarine

Group I elements are called