Extended periodic table

Scientists are trying to make new chemical elements that do not exist yet. In this way, they will extend the periodic table, or make it longer. As of 2026, the element with the highest atomic number is oganesson (Og), element 118. Scientists have tried to make atoms with higher atomic numbers, by forcing the nuclei of smaller atoms to merge into bigger ones, a process known as nuclear fusion. Scientists have also made predictions about how to make these atoms. There is probably a biggest possible atomic number for any atom. Atoms with a higher atomic number than this cannot exist. However, scientists are not sure what this number is.

 Layout 
The extended periodic table is a version of the periodic table that is longer than the normal one, making room for future synthetic elements. The inner transition metals are placed between Group 2 and Group 3 on the periodic table. On a normal periodic table, the inner transition metals are below Groups 2 and 3.

+ Extended Periodic Table
(Superheavy elements may not follow the order of this table)00
n³1
T 1 1H  2He 2 3Li 4Be  5B 6C 7N 8O 9F 10Ne 3 11Na 12Mg  13Al 14Si 15P 16S 17Cl 18Ar 4 19K 20Ca  21Sc 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga 32Ge 33As 34Se 35Br 36Kr 5 37Rb 38Sr  39Y 40Zr 41Nb 42Mo 43Tc 44Ru 45Rh 46Pd 47Ag 48Cd 49In 50Sn 51Sb 52Te 53I 54Xe 6 55Cs 56Ba  57La 58Ce 59Pr 60Nd 61Pm 62Sm 63Eu 64Gd 65Tb 66Dy 67Ho 68Er 69Tm 70Yb 71Lu 72Hf 73Ta 74W 75Re 76Os 77Ir 78Pt 79Au 80Hg 81Tl 82Pb 83Bi 84Po 85At 86Rn 7 87Fr 88Ra  89Ac 90Th 91Pa 92U 93Np 94Pu 95Am 96Cm 97Bk 98Cf 99Es 100Fm 101Md 102No 103Lr 104Rf 105Db 106Sg 107Bh 108Hs 109Mt 110Ds 111Rg 112Cn 113Nh 114Fl 115Mc 116Lv 117Ts 118Og 8 119Uue 120Ubn 121Ubu 122Ubb 123Ubt 124Ubq 125Ubp 126Ubh 127Ubs 128Ubo 129Ube 130Utn 131Utu 132Utb 133Utt 134Utq 135Utp 136Uth 137Uts 138Uto 139Ute 140Uqn 141Uqu 142Uqb 143Uqt 144Uqq 145Uqp 146Uqh 147Uqs 148Uqo 149Uqe 150Upn 151Upu 152Upb 153Upt 154Upq 155Upp 156Uph 157Ups 158Upo 159Upe 160Uhn 161Uhu 162Uhb 163Uht 164Uhq 165Uhp 166Uhh 167Uhs 168Uho 169Uhe 170Usn 171Usu 172Usb 9 173Ust 174Usq 175Usp 176Ush 177Uss 178Uso 179Use 180Uon 181Uou 182Uob 183Uot 184Uoq 185Uop 186Uoh 187Uos 188Uoo 189Uoe 190Uen 191Ueu 192Ueb 193Uet 194Ueq 195Uep 196Ueh 197Ues 198Ueo 199Uee 200Bnn 201Bnu 202Bnb 203Bnt 204Bnq 205Bnp 206Bnh 207Bns 208Bno 209Bne 210Bun 211Buu 212Bub 213But 214Buq 215Bup 216Buh 217Bus 218Buo 219Bue 220Bbn 221Bbu 222Bbb 223Bbt 224Bbq 225Bbp 226Bbh

 Naming of elements 
Each of these predicted elements can be given a name. These names are based on the digits of the atomic number. They were set by IUPAC, and come from Latin and Greek.
0: nill (N)
1: un (U)
2: bi (B)
3: tri (T)
4: quad (Q)
5: pent (P)
6: hex (H)
7: sept (S)
8: oct (O)
9: en (E)
The chemical name and symbol come from these put together, followed by "ium" or "um". For example, element 138 is called untrioctium and has symbol Uto.

An element can also be named by "eka-" followed by the element above it in the periodic table. For example, ununennium can also be called eka-francium.

Predictions
Pekka Pykkö has predicted how atomic orbitals will fill up as atomic number increases. According to this model, element 172 should be the end of the row that starts with element 119.

Related pages
Chemical element
Chemistry
Island of stability

 References 

Other websites
Images of g-orbitals  
jeries.rihani.com Extended periodic table 
Eric Scerri, The Periodic Table, Its Story and Its Significance, Oxford University Press, 2007.

Category:Periodic table
_Hypothetical
Category:Nuclear physics