Suggest one safety measure that should be used when rubidium is added

1.	Suggest one safety measure that should be used when rubidium is added to cold water
Answer» RUBIDIUM is denser than water and so sinks. It reacts VIOLENTLY and immediately, with everything SPITTING out of the CONTAINER again. Rubidium hydroxide solution and hydrogen are formed. The Group 1 metals become more reactive towards water as you GO down the Group.

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