ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Osmium Os 76 Transition metal the Greek osmè, meaning 'smell' 8 6 190.23 0.03 22.61 3306.00 5285.00 0.13 2.20 0.00
Iridium Ir 77 Transition metal Iris, the Greek goddess of the rainbow 9 6 192.22 0.00 22.56 2719.00 4701.00 0.13 2.20 0.00
Platinum Pt 78 Transition metal the Spanish platina, meaning 'little silver' 10 6 195.08 0.01 21.46 2041.40 4098.00 0.13 2.28 0.01
Rhenium Re 75 Transition metal Rhenus, the Latin name for the river Rhine 7 6 186.21 0.00 21.02 3459.00 5869.00 0.14 1.90 0.00
Neptunium Np 93 Actinide Neptune, the eighth planet in the Solar System 7 20.45 917.00 4273.00 1.36 0.00
Plutonium Pu 94 Actinide Pluto, a dwarf planet in the Solar System (then considered the ninth planet) 7 19.84 912.50 3501.00 1.28 0.00
Gold Au 79 Transition metal English word (aurum in Latin) 11 6 196.97 0.00 19.28 1337.33 3129.00 0.13 2.54 0.00
Tungsten W 74 Transition metal the Swedish tung sten, 'heavy stone' (W is wolfram, the old name of the tungsten mineral wolframite) 6 6 183.84 0.01 19.25 3695.00 5828.00 0.13 2.36 1.30
Uranium U 92 Actinide Uranus, the seventh planet in the Solar System 7 238.03 0.00 18.95 1405.30 4404.00 0.12 1.38 2.70
Tantalum Ta 73 Transition metal King Tantalus, father of Niobe from Greek mythology 5 6 180.95 0.00 16.65 3290.00 5731.00 0.14 1.50 2.00