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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.
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.
The definitive visualisation of all 118 elements is the periodic table of the elements, ... Si Silicon [y] 14 3 p-block 28.085: 2.3290: 1687: 3538: 0.705: 1.9: 282 000:
There are currently seven complete periods in the periodic table, comprising the 118 known elements. Any new elements will be placed into an eighth period; see extended periodic table. The elements are colour-coded below by their block: red for the s-block, yellow for the p-block, blue for the d-block, and green for the f-block.
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 –
1. Hydrogen 1 H 1.0080: Helium 2 He 4.0026: 2: Lithium 3 Li 6.94: Beryllium 4 Be 9.0122: Boron 5 B 10.81: Carbon 6 C 12.011: Nitrogen 7 N 14.007: Oxygen 8 O 15.999: Fluorine 9 F 18.998: Neon 10 Ne 20.180: 3: Sodium 11 Na 22.990: Magnesium 12 Mg 24.305: Aluminium 13 Al 26.982: Silicon 14 Si 28.085: Phosphorus 15 P 30.974 ...
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