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Chemistry


Mendeleev Periodic Table

When Mendeleev prepared the table, he ordered the elements strictly according to their physical properties. Much later was seen that the crucial fact is the number of valence electrons of the last electronic shell (groups) and the total number of the electronic shells of a chemical element. Below is the periodic table of elements.

Click on an element in the table to see the detailed page.

H He
Li Be B C N O F Ne
Na Mg Al Si P S Cl Ar
K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe
Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Cn Uut Fl Uup Lv Uus Uuo
Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu
Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr


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