37 Rb 85.468

Rubidium

Category: Alkali metal | State: Solid

Atomic Properties

Atomic Number 37
Atomic Mass 85.468
Electronic Configuration [Kr] 5s¹

Periodic Table Placement

Group 1
Period 5
Block s-block

Physical Properties & Discovery

Melting Point 39.3°C
Boiling Point 688°C
Density 1.532 g/cm³
Discovered By Robert Bunsen & Gustav Kirchhoff (1861)

Frequently Asked Questions about Rubidium