ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
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
Rhodium Rh 45 Transition metal the Greek rhodos, meaning 'rose coloured' 9 5 102.91 0.00 12.41 2237.00 3968.00 0.24 2.28 0.00
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
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
Yttrium Y 39 Transition metal Ytterby, Sweden 3 5 88.91 0.00 4.47 1799.00 3609.00 0.30 1.22 33.00
Terbium Tb 65 Lan­thanide Ytterby, Sweden 6 158.93 0.00 8.23 1629.00 3503.00 0.18 1.20 1.20
Thulium Tm 69 Lan­thanide Thule, the ancient name for Scandinavia 6 168.93 0.00 9.32 1818.00 2223.00 0.16 1.25 0.52
Holmium Ho 67 Lan­thanide Holmia, the New Latin name for Stockholm 6 164.93 0.00 8.80 1734.00 2993.00 0.17 1.23 1.30
Praseodymium Pr 59 Lan­thanide the Greek praseios didymos meaning 'green twin' 6 140.91 0.00 6.77 1208.00 3793.00 0.19 1.13 9.20
Bismuth Bi 83 Post-​transition metal Uncertain, possibly Arabic or German 15 6 208.98 0.00 9.81 544.70 1837.00 0.12 2.02 0.01