Compare Element Properties

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Property	Rb Rubidium	? N/A
Atomic number	37	N/A
Symbol	Rb	N/A
Name	Rubidium	N/A
Category	alkali-metal	N/A
Standard Atomic Weight	85.4678 u	N/A
Period	5	N/A
Group	1	N/A
Block	s	N/A
Phase at STP	solid	N/A
Electron configuration	[Kr]5s1	N/A
Oxidation states	[-1, 1]	N/A
Electronegativity (Pauling)	0.82	N/A
Electron affinity	0.4859 eV	N/A
Density	1530 kg/m³	N/A
Melting point	39.31 °C	N/A
Boiling point	687.85 °C	N/A
Discovery year	1861	N/A