Basic Information
Name:rubidium
Symbol:RB
Classification: Rubidium is an alkali metal
color: silvery-white
Atomic weight :85.468
state: solid
Melting Point:39.3 oC, 312.45 K
Boiling Point:690 oC, 963 K
Shells:2,8,18,8,1
Electron configuration: [Kr] 5s1
Density @ 20oC:1.53 g/cm3
Atomic volume:55.9 cm3/mol
Structure: bcc: body-centered cubic
hardness: 0.3 mohs