At	Z =  85	◊ ◊ ◊ ◊ ◊	Astatine
			From the Greek "astatos", meaning "unstable"
(AM) Atomic Mass	209  amu	♦	Oxidation States	+1, -1
(BP) Boiling Point	962  °C	♦	(MP) Melting Point	254  °C
(ρ) Density	9.4  g/cm3	♦	Crystal Structure	n/a
( χ ) Electronegativity	2	♦	(AR) Atomic Radius	1.53  Å
Physical State	Solid	♦	(C) Heat Capacity	n/a
Electronic-Config	[Xe]  4f14  5d10  6s2  6p5	♦	(I1) First Ionization E	931.08  kJ/mol
(ΔHvap) Heat of Vaporization	40  kJ/mol	♦	(ΔHfus) Heat of Fusion	6  kJ/mol
Year of Discovery	1940	♦	Location of Discovery	U. Cal, Berkley
(E°) Standard Potential	None
Stable isotopes	None. All natural isotopes are radioactive
Discovered/Synthesized by	Dale R. Carson, K.R. MacKenzie, Emilio Segrč
Natural Source	Isolated from the decay of radioactive elements
Common Uses	Cancer medicine
Other Info	Considered to be the rarest of all elements due to very short radioactive half life
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