Question

What precautions would you take before testing the behavior of rubidium (Rb) in water?

Answer 1

Shielding (eyes, skin) and taking a very small amount of rubidium.

Explanation:

`Rb` is a group 1 element, and as you go down the column in the periodic system, the reaction to water gets more fierce. Potassium already reacts much more fierce than sodium, so rubidium will be even worse!