Superlatives of Chemical Elements

Please answer in IUPAC English proper name but not scientific symbol as multiple elements might start with the same alphabets

Based on 118 identified elements

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Last updated: September 16, 2015

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First submitted	December 3, 2014
Times taken	119
Average score	27.3%
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Hint	Answer
Heaviest atomic mass (natural-occuring)	Plutonium
Heaviest atomic mass (synthetic)	Ununseptium
Lightest (Atomic mass)	Hydrogen
Highest density (natural-occuring)	Hassium
Highest density (synthetic)	Osmium
Lowest density	Hydrogen
Rarest abundance on earth (Natural-occuring & Stable)	Bismuth
Rarest abundance on earth (Natural-occuring & Radioactive)	Astatine
Highest abundance on earth	Oxygen
Highest abundance in earth crust	Iron
Highest abundance in the universe	Hydrogen
Highest abundance in earth's ocean	Oxygen
Highest abundance in atmosphere	Nitrogen
Highest abundance in human body	Oxygen
Highest melting point	Carbon
Lowest melting point	Helium
Highest boiling point	Rhenium
Lowest boiling point	Helium
Most electronegative	Fluorine
Most electropositive	Francium
Highest specific heat capacity	Hydrogen
Lowest specific heat capacity	Radon/Radium

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