The element Rb (Rubidium) is in period 5 of the periodic table.
RB ???
RB as it is at this time
85.4678 is the atomic weight of Rb.
RB means random boner
The oxidation number of Rb is 1.
The element RB, which is rubidium, has 37 protons.
Their 1st String RB is Tim Hightower
Rb (rubidium) is a metal.
Tennessee Titans RB - Chris Johnson
RB Montecatini Terme was created in 1979.
RB Leipzig was created on 2009-05-19.