Definitions for

Overview of noun rb

The noun rb has 1 senses? (no senses from tagged texts)
1. rubidium, Rb, atomic number 37

(a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite) © 2001-2013, Demand Media, all rights reserved. The database is based on Word Net a lexical database for the English language. see disclaimer
Classroom | Privacy Policy | Terms | Ad Choices