K	Z =  19	◊ ◊ ◊ ◊ ◊	Potassium
			From the Modern Latin "potassa", meaning "pot-ash"
(AM) Atomic Mass	39.0983  amu	♦	Oxidation States	+1
(BP) Boiling Point	759.9  °C	♦	(MP) Melting Point	63.25  °C
(ρ) Density	0.87  g/cm3	♦	Crystal Structure	Body Centered Cubic
( χ ) Electronegativity	0.8	♦	(AR) Atomic Radius	1.96  Å
Physical State	Solid	♦	(C) Heat Capacity	0.757  J/g °C
Electronic-Config	[Ar]  4s1	♦	(I1) First Ionization E	418.84  kJ/mol
(ΔHvap) Heat of Vaporization	76.9  kJ/mol	♦	(ΔHfus) Heat of Fusion	2.321  kJ/mol
Year of Discovery	1807	♦	Location of Discovery	England
(E°) Standard Potential	K+⇔ K (-2.931 V)
Stable isotopes	39K,  41K
Discovered/Synthesized by	Sir Humphry Davy
Natural Source	The mineral/ore sylvite, brines, and langbeinite
Common Uses	Soap, fertilizer, potash, matches, gunpowder
Other Info	Latin name: Kalium Crucial element in artificial fertilizers
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