ChemicalElements

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Element Symbol AtomicNumber ChemicalPropertyId OriginOfName Group Period AtomicWeight AtomicWeightUncertainty Density MeltingPoint BoilingPoint HeatCapacity Electronegativity AbundanceInEarthsCrust
Neon Ne 10 Noble gas the Greek neos, meaning 'new' 18 2 20.18 0.00 0.00 24.56 27.07 1.03 0.01
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
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
Sodium Na 11 Alkali metal the English word soda (natrium in Latin) 1 3 22.99 0.00 0.97 370.87 1156.00 1.23 0.93 23600.00
Nitrogen N 7 Reactive nonmetal the Greek nitron and '-gen' meaning 'niter-forming' 15 2 14.01 0.00 0.00 63.15 77.36 1.04 3.04 19.00
Meitnerium Mt 109 Unknown chemical properties Lise Meitner, physicist 9 7 -37.40 0.00
Molybdenum Mo 42 Transition metal the Greek molybdos meaning 'lead' 6 5 95.95 0.01 10.22 2896.00 4912.00 0.25 2.16 1.20
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
Magnesium Mg 12 Alkaline earth metal Magnesia, a district of Eastern Thessaly in Greece 2 3 24.31 0.00 1.74 923.00 1363.00 1.02 1.31 23300.00
Mendelevium Md 101 Actinide Dmitri Mendeleev, chemist and inventor 7 -10.30 -1100.00 1.30 0.00