5 alternative layouts 6 open questions and

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5 Alternative layouts 6 Open questions and controversies 6.1 Elements with unknown chemical properties
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6/2/13 11:44 AM Periodic table - Wikipedia, the free encyclopedia Page 2 of 17 V · T · E (//en.wikipedia.org/w/index.php?title=Template:Periodic_table&action=edit) 6.2 Further periodic table extensions 6.3 Element with the highest possible atomic number 6.4 Placement of hydrogen and helium 6.5 Groups included in the transition metals 6.6 Period 6 and 7 elements in group 3 6.7 Optimal form 7 See also 8 Notes 9 References 10 Bibliography 11 External links Layout Periodic table Group 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Alkali metals Alkaline earth metals Coin- age metals Vola- tile metals Boron group Carbon group Pnicto- gens Chalco- gens Halo- gens Noble gases Period 1 Hydro- gen 1 H Helium 2 He 2 Lith- ium 3 Li Beryl- lium 4 Be Boron 5 B Carbon 6 C Nitro- gen 7 N Oxygen 8 O Fluor- ine 9 F Neon 10 Ne 3 Sodium 11 Na Magne- sium 12 Mg Alumin ium 13 Al Silicon 14 Si Phos- phorus 15 P Sulfur 16 S Chlor- ine 17 Cl Argon 18 Ar 4 Potas- sium 19 K Cal- cium 20 Ca Scan- dium 21 Sc Tita- nium 22 Ti Vana- dium 23 V Chrom- ium 24 Cr Manga- nese 25 Mn Iron 26 Fe Cobalt 27 Co Nickel 28 Ni Copper 29 Cu Zinc 30 Zn Gallium 31 Ga Germa- nium 32 Ge Arsenic 33 As Sele- nium 34 Se Bromine 35 Br Kryp- ton 36 Kr 5 Rubid- ium 37 Rb Stront- ium 38 Sr Yttrium 39 Y Zirco- nium 40 Zr Nio- bium 41 Nb Molyb- denum 42 Mo Tech- netium 43 Tc Ruthe- nium 44 Ru Rho- dium 45 Rh Pallad- ium 46 Pd Silver 47 Ag Cad- mium 48 Cd Indium 49 In Tin 50 Sn Anti- mony 51 Sb Tellur- ium 52 Te Iodine 53 I Xenon 54 Xe 6 Cae- sium 55 Cs Barium 56 Ba * Haf- nium 72 Hf Tanta- lum 73 Ta Tung- sten 74 W Rhe- nium 75 Re Os- mium 76 Os Iridium 77 Ir Plat- inum 78 Pt Gold 79 Au Mer- cury 80 Hg Thallium 81 Tl Lead 82 Pb Bis- muth 83 Bi Polo- nium 84 Po Asta- tine 85 At Radon 86 Rn 7 Fran- cium 87 Fr Radium 88 Ra ** Ruther- fordium 104 Rf Dub- nium 105 Db Sea- borgium 106 Sg Bohr- ium 107 Bh Has- sium 108 Hs Meit- nerium 109 Mt Darm- stadtium 110 Ds Roent- genium 111 Rg Coper- nicium 112 Cn Unun- trium 113 Uut Flerov- ium 114 Fl Unun- pentium 115 Uup Liver- morium 116 Lv Unun- septium 117 Uus Unun- octium 118 Uuo * Lanthanides Lan- thanum 57 La Cerium 58 Ce Praseo- dymium 59 Pr Neo- dymium 60 Nd Prome- thium 61 Pm Sama- rium 62 Sm Europ- ium 63 Eu Gadolin ium 64 Gd Ter- bium 65 Tb Dyspro sium 66 Dy Hol- mium 67 Ho Erbium 68 Er Thulium 69 Tm Ytter- bium 70 Yb Lute- tium 71 Lu ** Actinides Actin- ium 89 Ac Thor- ium 90 Th Protac- tinium 91 Pa Ura- nium 92 U Neptu- nium 93 Np Pluto- nium 94 Pu Ameri- cium 95 Am Curium 96 Cm Berkel- ium 97 Bk Califor- nium 98 Cf Einstei- nium 99 Es Fer- mium 100 Fm Mende- levium 101 Md Nobel- ium 102 No Lawren cium 103 Lr
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6/2/13 11:44 AM Periodic table - Wikipedia, the free encyclopedia Page 3 of 17 This is an 18-column periodic table layout, which has come to be referred to as the common or standard form , on account of its popularity. It is also sometimes referred to as the long form , in comparison to the short form or Mendeleev-style ( ), which omits groups 3–12 by placing their elements into the main groups. The
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