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HOME > Protocols > Reference Material > Periodic Table > Rubidium
Rubidium

Atomic Number: 37

Name: Rubidium

Atomic symbol: Rb

Atomic Weight: 85.4678

Electron affinity: -47 kJ/mol

Electron configuration: 1s22s22p63s23p63d104s24p65s1

Ionization energies: 403 kJ/mol; 2,632 kJ/mol

Pauling electronegativity: 0.8

Melting Point: 39oC

Boiling Point: 688oC

Density: 1.53 g/cm3

Standard potential (volts), M+ + e- ---> M: -2.92

Covalent radius: 2.16 angstroms

Ionic radius: 1.66 angstroms (+1)

Common oxidation states in compounds: +1

Previous: Atomic Number 36 - Krypton


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