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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 LAWRENCIUM 103 Lr [ 262 ] actiniumaluminiumamericiumantimonyargonarsenicastatinebariumberkeliumberylliumbismuthbohriumboronbrominecadmiumcaesiumcalciumcaliforniumcarbonceriumchlorinechromiumcobaltcoppercuriumdarmstadtiumdubniumdysprosiumeinsteiniumerbiumeuropiumfermiumfluorinefranciumgadoliniumgalliumgermaniumgoldhafniumhassiumheliumholmiumhydrogenindiumiodineiridiumironkryptonlanthanumlawrenciumleadlithiumlutetiummagnesiummanganesemeitneriummendeleviummercurymolybdenumneodymiumneonneptuniumnickelniobiumnitrogennobeliumosmiumoxygenpalladiumphosphorusplatinumplutoniumpoloniumpotassiumpraseodymiumpromethiumprotactiniumradiumradonrheniumrhodiumroentgeniumrubidiumrutheniumrutherfordiumsamariumscandiumseaborgiumseleniumsiliconsilversodiumstrontiumsulphurtantalumtechnetiumtelluriumterbiumthalliumthoriumthuliumtintitaniumtungstenuraniumvanadiumxenonytterbiumyttriumzinczirconium Name: lawrencium Group number: 3 Symbol: Lr Group name: (none) Atomic number: 103 Period number: 7 Atomic weight: [ 262 ] Block: d-block CAS Registry ID: 22537-19-5 Voice: Standard state: presumably a solid at 298 K Colour: unknown, but probably metallic and silvery white or grey in appearance Classification: Metallic Availability: Fluorides none listed Chlorides none listed Bromides none listed Iodides none listed Hydrides none listed Oxides none listed Sulfides none listed Selenides none listed Tellurides none listed Nitrides none listed

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