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The electron configuration of all 118 elements of the Periodic Table in the fully expanded periodic table (32 elements wide!)

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Pd Gp1 Gp2 Gp3 ALL 118 elements of the modern expanded periodic table
 

s block, groups 1 and 2

 Gp13 Gp14 Gp15 Gp16 G 17 Gp18
1

[1H] (hydrogen does not really fit into any group)

 p-block elements group 13 to 18 (new IUPAC numbering) 2He
2 3Li 4Be

The electron configuration of all the elements in the Periodic Table

21Sc to 30Zn form the top elements of Groups 3 to 12 in the latest IUPAC group designation.

Group 3, 1st element of a horizontal d-block series

Groups 4 to 12. of the other 9 elements of a d-block series

 5B 6C 7N 8O 9F 10Ne
3 11Na 12Mg 13Al 14Si 15P 16S 17Cl 18Ar
4 19K 20Ca 21Sc  

f blocks (rows of 14 elements not assigned a group number)

 22Ti 23V 24Cr 25Mn 26Fe 27Co 28Ni 29Cu 30Zn 31Ga1 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
8 119 120 121                                               167 168 169 170 171 172
Period 8: Super-heavy elements of period 8 from Z = 119 to 172

i.e. beyond Z=118, the current known limit of elements

119 group 1 predicted to be an alkali metal, maybe a liquid

120 group 2, predicted to be an alkaline earth metal,

121 group 3, metal like lanthanum and actinium

113/167, group 13, like thallium

114/168 group 14, like lead

115/169 group 15, like bismuth

116/170 group 16, like polonium

117/171 group 17, halogen like astatine, very dark coloured solid and vapour, maybe 'semi-metal' from diagonal trend

118/172 group 18 noble gas, maybe a liquid, the most reactive, possibly semi-conductor if solid?

Period 8 would be further expanded to include a g block of elements Z = 122 to 141.

Theoretical nuclear physics predicts pockets of enhanced stability (“islands of stability”) for super‑heavy isotopes beyond element 118, although these nuclei would still be radioactive. The key idea is that certain combinations of proton and neutron “magic numbers” could give much longer half‑lives than the extremely short lifetimes seen for known superheavy nuclei.

Models predict that elements around Z ≈ 120 and 126, especially with neutron numbers N ≈ 184, 258, or even 350, could form relatively stable isotopes — meaning half‑lives long enough to study, not truly stable like lead or iron.

What the research shows

1. Island of stability predicted near element 120

Modern nuclear models and recent experimental work point to a region of enhanced stability around element 120.

  • The “island of stability” is predicted around undiscovered element 120, where certain isotopes may have significantly longer lifetimes.
  • Experiments using new fusion pathways (e.g., titanium‑50 beams) are being developed specifically to reach Z > 118.
  • Experiments have reached Z = 118 (oganesson).
  • Attempts to synthesise Z = 119–120 are ongoing but have not yet succeeded.

2. Theoretical models predict magic neutron numbers (N)

Advanced relativistic Hartree‑Bogoliubov calculations suggest several possible neutron magic numbers for superheavy nuclei:

  • N = 184
  • N = 258
  • N = 350 These correspond to predicted “shell closures” that could give unusually long half‑lives for isotopes of Z ≈ 122 and neighbouring elements.

3. No stable isotopes — but possibly long‑lived ones

Theory strongly predicts relatively long‑lived isotopes of superheavy elements beyond 118, especially around Z ≈ 120–126 with neutron numbers near 184 or higher. These would not be truly stable and radioactive, but could have lifetimes long enough to observe and study, forming the long‑anticipated island of stability.

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