ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Palladium Pd 46 Transition metal the then recently discovered asteroid Pallas, considered a planet at the time 10 5 106.42 0.01 12.02 1828.05 3236.00 0.24 2.20 0.02
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
Rubidium Rb 37 Alkali metal the Latin rubidus, 'deep red' 1 5 85.47 0.00 1.53 312.46 961.00 0.36 0.82 90.00
Xenon Xe 54 Noble gas the Greek xenos, 'strange' 18 5 131.29 0.01 0.01 161.40 165.03 0.16 2.60 0.00
Radon Rn 86 Noble gas From radium, as it was first detected as an emission from radium during radioactive decay 18 6 0.01 202.00 211.30 0.09 2.20 0.00
Caesium Cs 55 Alkali metal the Latin caesius, 'sky blue' 1 6 132.91 0.00 1.87 301.59 944.00 0.24 0.79 3.00
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
Neodymium Nd 60 Lan­thanide the Greek neos didymos meaning 'new twin' 6 144.24 0.00 7.01 1297.00 3347.00 0.19 1.14 41.50
Promethium Pm 61 Lan­thanide Prometheus of Greek mythology who stole fire from the Gods and gave it to humans 6 7.26 1315.00 3273.00 1.13 0.00
Terbium Tb 65 Lan­thanide Ytterby, Sweden 6 158.93 0.00 8.23 1629.00 3503.00 0.18 1.20 1.20