Rb is the symbol for the element, rubidium.
RB as it is at this time
RB ???
RB means random boner
The oxidation number of Rb is 1.
85.4678 is the atomic weight of Rb.
Each atom of Rubidium (Rb) has 37 protons.
Their 1st String RB is Tim Hightower
Tennessee Titans RB - Chris Johnson
Rb (rubidium) is a metal.
Since Rb forms a 1+ ion the formula for rubidium oxide is Rb2O.
on the xbox it is,up,up,left,right,rb,rb,lt,rb,lb,down