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background Key data; description History hydrogen around us Uses Geology Biology hydrogen compounds Reactions of hydrogen Compounds Bond enthalpies Radii in compounds Lattice energies Reduction potentials nuclear properties NMR Naturally occurring isotopes Radioisotopes electronic properties Electronic configuration Ionization energies Electron affinities Electronegativities Effective nuclear charges Electron binding energies Atom radii Valence shell radii physical properties Bulk properties (density, resistivity, etc.) Thermal properties (melting point, etc.) Thermodynamic properties crystallography Crystal structure Elements GERMANIUM 32 Ge 72.64 (1) actiniumaluminiumamericiumantimonyargonarsenicastatinebariumberkeliumberylliumbismuthbohriumboronbrominecadmiumcaesiumcalciumcaliforniumcarbonceriumchlorinechromiumcobaltcoppercuriumdarmstadtiumdubniumdysprosiumeinsteiniumerbiumeuropiumfermiumfluorinefranciumgadoliniumgalliumgermaniumgoldhafniumhassiumheliumholmiumhydrogenindiumiodineiridiumironkryptonlanthanumlawrenciumleadlithiumlutetiummagnesiummanganesemeitneriummendeleviummercurymolybdenumneodymiumneonneptuniumnickelniobiumnitrogennobeliumosmiumoxygenpalladiumphosphorusplatinumplutoniumpoloniumpotassiumpraseodymiumpromethiumprotactiniumradiumradonrheniumrhodiumroentgeniumrubidiumrutheniumrutherfordiumsamariumscandiumseaborgiumseleniumsiliconsilversodiumstrontiumsulphurtantalumtechnetiumtelluriumterbiumthalliumthoriumthuliumtintitaniumtungstenuraniumvanadiumxenonytterbiumyttriumzinczirconium Name: germanium Group number: 14 Symbol: Ge Group name: (none) Atomic number: 32 Period number: 4 Atomic weight: 72.64 (1) Block: p-block CAS Registry ID: 7440-56-4 Voice: Standard state: solid at 298 K Colour: greyish white Classification: Semi-metallic Availability: Fluorides GeF2 GeF4 Chlorides GeCl2 GeCl4 Bromides GeBr2 GeBr4 Iodides GeI2 GeI4 Hydrides GeH4 Ge2H6 Oxides GeO GeO2 Sulfides GeS GeS2 Selenides GeSe GeSe2 Tellurides GeTe Nitrides Ge3N4

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