Yes it is.
I believe, due to complicated scientific discoveries, that Rubidium is in fact a NATURAL element.
Rb is the symbol for the element, rubidium.
Rubidium (Rb) occurs naturally in minerals such as Pollucite, Carnallite and Lepidolite.
Rubidium is an element (atomic number 37).
Rubidium is an element (atomic number 37).
Rubidium is an element (atomic number 37).
no, Rubidium is an element with periodic number 37
Rubidium is a metal element. Mass number of it is 85.
RbO is not an element, but there are two elements in it . . . Rubidium and Oxygen. It would be called, "Rubidium Oxide".
Rubidium is a metal element. Mass number of it is 85.
Rubidium Iodide
Rubidium.