How to use in-sentence of “rubidium”:
– It reacts with air and water and makes the corrosive substance rubidium hydroxide.
– It is made by reduction reduction of rubidium ores with calcium.
– Some rubidium compounds have a mixed oxidation state, though.
– Bunsen found the elements caesium and rubidium with his spectroscope.
– Rubidium chloride is the most common rubidium compound.
– It is made by disproportionationdisproportionating hydrogen by reacting hydrogen with rubidium hydroxide.
– It is expensive because calcium is difficult to make and the rubidium needs to be kept in argon and away from water or air.
