Is Rubidium reactive or non reactive?

reactive

All the alkali metals (Li, Na, K, Rb, Cs, Fr) are very reactive.

reactive metals react with water and acids,but the non reactive doesnt. dude that isn't a proper answer

Charcoal react, for example, with oxygen: this is the process of burning (oxydation).

As mercury is below hydrogen in the reactivity series of metals,it is not reactive.. but if u mix it with oxygen it blows up and makes a big BOOOOOOOOM!