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English: An SVG periodic table of the elements, which includes name, atomic mass, electron configuration, first ionization energy, and electronegativity. Română: Un table periodic al elementelor în format SVG, ce include numele, masa atomică, configurația electronică, energia de ionizare primară și electronegativitatea.
Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3 ; it is usually shown at the foot of the table to save horizontal space.
FA: current Featured Picture used in the infobox: A: current infobox picture is of high quality (could become FP) B: current infobox picture is of good quality
Selenium 34 Se 78.971: Bromine 35 Br 79.904: Krypton 36 Kr 83.798: 5: Rubidium 37 Rb 85.468: Strontium 38 Sr 87.62: Yttrium 39 Y 88.906: Zirconium 40 Zr 91.224: Niobium 41 Nb 92.906: Molybdenum 42 Mo 95.95: Technetium 43 Tc [97] Ruthenium 44 Ru 101.07: Rhodium 45 Rh 102.91: Palladium 46 Pd 106.42: Silver 47 Ag 107.87: Cad ...
in Periodic Table 1871 Italic text: in Periodic Table 1906 (the last by Mendeleev) Regular text (not bold) added after 1906 begin–end of 1871 Reihe – Ga: Element predicted, later proven correct within Mendeleev's lifetime and added by him – (Tc) Element predicted, later proven correct posthumously –
b Group 18, the noble gases, were not discovered at the time of Mendeleev's original table. Later (1902), Mendeleev accepted the evidence for their existence, and they could be placed in a new "group 0", consistently and without breaking the periodic table principle. r Group name as recommended by IUPAC.
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