Sounds a lot like LRBD/RBDM except in dust form.

but Rubidium is more reactive than potassium in the first place

instead, how bout having Cesium which is even more reactive than rubidium

Ceasium set the standard for time btw

fffffffffffffuuuuuuuuuuu!!!
There was billion replies on suggestions like this:
1) There is topic to suggest new elements
2) There are rules which says do not suggest elements from periodic table. We already have rubidium and this is enough

P.S. Sorry for emotions, but you should understand me

SerGreen
your #2 actually reads that you can suggest periodic table elements if they greatly improve the general gameplay of TPT, like every other suggestion

you can suggest elements periodic table related and get the same result as any other suggestion

Rconover
Yes shurely you can suggest elements from periodic table, but they should greatly improve the general gameplay of TPT. But you shouldn't suggest elements, that already have similar ones in TPT. Agree?

any other suggestion receives the same attention as a suggestion from the periodic table of elements or any other chemistry feature.