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Transmoscovium element

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Transmoscovium elements (also known as transmoscovic elements) are elements with atomic numbers higher than moscovium. Transmoscovium elements range from atomic numbers 119 through 172, and are found in periods 8 and 9. Elements higher than 172 would be grouped independently as transramsium element. None of these elements were discovered yet, but the lightest members shall be discovered in the near-future.

Transmoscovium elements occupy all five blocks of the extended periodic table, including g-block exclusive to those element. This atomic number group comprises of six series: newtonide series (2 elements), lavoiside series (20 elements), dumaside series (14 elements), vanthoffide series (10 elements), pasturide series (2 elements), and kirchoffide series (6 elements).

Every element in this atomic number group are radioactive. Lighter elements in this group generally have longer half-lives than heavier elements. The longest-lived element is maxwellium (Z=126) with a half-life of 117 billion years; the shortest-lived is bunsenium (Z=171) with a half-life of just 1 nanosecond. Lighter elements undergo mainly alpha decay while heavier ones undergo spontaneous fission.

Due to quantum and relativistic effects due to their high atomic numbers, many such elements differ considerably in properties from lighter elements in their corresponding families. As a result, electron configurations would differ than expected from Aufbau principle. For example, the g-block series would contain 20 elements instead of 18 due to two electrons being permanently added to p-orbital, and would finish filling the orbital under the presence of the ninth shell. As a result, period 8 would not have p-block series, while period 9 will have just s-block and p-block elements.

Periodic table
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1 H He
2 Li Be B C N O F Ne
3 Na Mg Al Si P S Cl Ar
4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
6 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
7 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 Bc Fl Lz Lv J Mc
8 Nw Gl * Du Bu Ab Sh Hi Da Bo Fa Av So Hr Wt Dr Le Vh Hk Ke Ap Vw Hu Fh Ma Kp Gb
9 Ps Hb Kf Bn Ju Hm Bs Rs
* Ls Dm Ms Ts Dt Mw Pk By Bz Fk Dw To Pl Ah My Cv Fy Ch An Ed

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