What is Rb? Important knowledge about Rb.

1. Definition of Rb
   1.1 Names
   1.1.1 Common name: Rubidi
   1.1.2 English name: Rubidium
   1.2. Atomic mass: 85.47
   1.3. Atomic weight: 85.4678 u
   1.3.1 Molecular structure: Rb
   1.4 Ion structure: Rb+

2. Properties: Rb

2.1 Physical properties of Rb
State: Soft metal, silver-white
Color: Silver-white
Smell: Odorless
PH level: Not applicable
2.2 Chemical properties of Rb: Rb reacts vigorously with water to produce hydrogen and rubidium hydroxide. It also reacts with oxygen in the air, quickly turning brown.

3. Common chemical reactions of Rb
   Metal Reaction
   Rb + Cl₂ -> RbCl
   Acid Reaction
   Rb + H₂O -> RbOH + H₂
   Non-metal Reaction
   Rb + O₂ -> Rb₂O
   Reaction with Salt
   Rb + NaCl -> RbCl + Na

4. Preparation of Rb

4.1 Lab preparation of Rb
Rubidium cannot be prepared in the lab due to its highly reactive nature.
4.2 Industrial preparation of Rb
Rubidium is prepared industrially through the electrolysis of rubidium compounds, usually rubidium salt.