ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Scandium Sc 21 Transition metal Scandia, the Latin name for Scandinavia 3 4 44.96 0.00 2.99 1814.00 3109.00 0.57 1.36 22.00
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
Protactinium Pa 91 Actinide the Greek protos, 'first', and actinium, which is produced through the radioactive decay of protactinium 7 231.04 0.00 15.37 1841.00 4300.00 1.50 0.00
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
Titanium Ti 22 Transition metal Titans, the sons of the Earth goddess of Greek mythology 4 4 47.87 0.00 4.54 1941.00 3560.00 0.52 1.54 5650.00
Manganese Mn 25 Transition metal corrupted from magnesia negra, see Magnesium 7 4 54.94 0.00 7.44 1519.00 2334.00 0.48 1.55 950.00
Beryllium Be 4 Alkaline earth metal beryl, a mineral 2 2 9.01 0.00 1.85 1560.00 2742.00 1.83 1.57 2.80
Niobium Nb 41 Transition metal Niobe, daughter of king Tantalus from Greek mythology 5 5 92.91 0.00 8.57 2750.00 5017.00 0.27 1.60 20.00
Aluminium Al 13 Post-​transition metal from alumina, a compound (originally alumium) 13 3 26.98 0.00 2.70 933.47 2792.00 0.90 1.61 82300.00
Thallium Tl 81 Post-​transition metal the Greek thallos, 'green twig' 13 6 204.38 11.85 577.00 1746.00 0.13 1.62 0.85