Rb	Z =  37	◊ ◊ ◊ ◊ ◊	Rubidium
			From the Latin "rubidus", meaning "deepest red"
(AM) Atomic Mass	85.4678  amu	♦	Oxidation States	+1
(BP) Boiling Point	686  °C	♦	(MP) Melting Point	38.9  °C
(ρ) Density	1.53  g/cm3	♦	Crystal Structure	Body Centered Cubic
( χ ) Electronegativity	0.8	♦	(AR) Atomic Radius	2.11  Å
Physical State	Solid	♦	(C) Heat Capacity	0.363  J/g °C
Electronic-Config	[Kr]  5s1	♦	(I1) First Ionization E	403.02  kJ/mol
(ΔHvap) Heat of Vaporization	75.77  kJ/mol	♦	(ΔHfus) Heat of Fusion	2.19  kJ/mol
Year of Discovery	1861	♦	Location of Discovery	Germany
(E°) Standard Potential	Rb+⇔ Rb (-2.980 V)
Stable isotopes	85Rb
Discovered/Synthesized by	Robert Bunsen, Gustav Kirchhoff
Natural Source	The mineral/ore lepidolite and pollucite
Common Uses	Atomic clocks, global navigation (GPS), vacuum tube scavenger
Other Info	Rubidium-87 isotope naturally repel each other
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