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H He

Classification périodique des éléments chimiques. gaz gaz. H He. 1. 1 2. 1 2. 13 14 15 16 17 18. hydrogène hélium. gaz gaz gaz gaz.

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H He

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  1. Classification périodique des éléments chimiques gaz gaz HHe 1 1 2 1 2 13 14 15 16 17 18 hydrogène hélium gaz gaz gaz gaz Li Be BCNOFNe 2 34 5 6 7 8 9 10 lithium bérylium bore carbone azote oxygène fluor néon gaz gaz Na Mg Al SiPSClAr 3 3 4 5 6 7 8 9 10 11 12 11 12 13 14 15 16 17 18 sodium magnésium aluminium silicium phosphore soufre chlore argon liq gaz K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga GeAsSeBr Kr 4 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 titane vanadium chrome manganèse fer cobalt nickel cuivre zinc gallium germanium arsenic sélénium brome krypton potassium calcium scandium gaz Rb Sr Y Zr Nb Mo Tc* Ru Rh Pd Ag Cd In Sn SbTeIXe 5 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 Lanthanides rubidium strontium yttrium zirconium niobium molybdène technétium ruthénium rhodium palladium argent cadmium indium étain antimoine tellure iode xénon gaz liq Cs Ba La Ce Pr Nd Pm*Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po*At* Rn* 6 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 césium baryum lanthane cérium praséodyme néodyme prométium samarium europium gadolinium terbium dysprosium holmium erbium thulium ytterbium lutécium hafnium tantale tungstène rhénium osmium iridium platine or mercure thallium plomb bismuth polonium astate radon Fr* Ra* Ac* Th* Pa* U* Np* Pu* Am* Cm* Bk* Cf* Es* Fm* Md* No* Lr* Rf * Db* Sg* Bh* Hs* Mt* Ds* Rg* Cn* Uut* Uuq*Uup*Uuh*Uus*Uuo* 7 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 francium radium actinium thorium protactinium uranium neptunium plutonium américium curium berkélium californium einsteinium fermium mendélévium nobélium lawrencium rutherfordium dubnium seaborgium bohrium hassium meitnerium darmstadtium roentgenium coperniciom ununtrium ununquadium ununpentium ununhexium ununseptium ununoctium Actinides Alcalins Halogènes Gaz nobles Chalcogènes Alcalino-terreux X : élément ayant un ou plusieurs isotopes naturels non radioactifs X*: élément dont tous les isotopes naturels sont radioactifs X*: élément dont tous les isotopes sont artificiels et radioactifs Unx* : nom provisoire gaz : élément formant un ou plusieurs corps simples gazeux à 298 K, 105 Pa liq : élément formant un corps simple liquide à 298 K, 105 Pa X: élément non métallique

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