TY JOUR TI THERE ARE 3980 ELEMENTS IN D.I. MENDELEYEV’S PERIODIC TABLE KW world constants KW fine structure constant KW atomic mass of hydrogen KW proton to electron mass ratio KW dyads KW periods KW number of elements KW upper limit KW the structure of the periodic table KW the relationship between world constants and the parameters of the periodic table JO Technique and technology of silicates AU Sarkisov, Y.S. PY 2026 IS 33 PB Individual Entrepreneur Svetlana Vasilievna Samchenko