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2. Periodic table - Wikipedia

   en.wikipedia.org/wiki/Periodic_table

   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.

3. Periodic table (electron configurations) - Wikipedia

   en.wikipedia.org/wiki/Periodic_table_(electron...

   In many cases, multiple configurations are within a small range of energies and the small irregularities that arise in the d- and f-blocks are quite irrelevant chemically. [1] The construction of the periodic table ignores these irregularities and is based on ideal electron configurations.

4. Template:Periodic table (electron configuration) - Wikipedia

   en.wikipedia.org/wiki/Template:Periodic_table...

   1 14 Si 2 2 15 P 2 3 16 S 2 4 17 Cl 2 5 18 Ar 2 6 [Ar] 4s: 3d: 4p: 19 K 1-- 20 Ca 2-- 21 Sc 2 1 - 22 Ti 2 2 - 23 V 2 3 - 24 Cr 1 5 - 25 Mn 2 5 - 26 Fe 2 6 - 27 Co 2 7 - 28 Ni 2 8 - 29 Cu 1 10 - 30 Zn 2 10 - 31 Ga 2 10 1 32 Ge 2 10 2 33 As 2 10 3 34 Se 2 10 4 35 Br 2 10 5 36 Kr 2 10 6 [Kr] 5s: 4d: 5p: 37 Rb 1-- 38 Sr 2-- 39 Y 2 1 - 40 Zr 2 2 ...

5. List of chemical elements - Wikipedia

   en.wikipedia.org/wiki/List_of_chemical_elements

   A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...

6. Electron configurations of the elements (data page) - Wikipedia

   en.wikipedia.org/wiki/Electron_configurations_of...

   Here [Ne] refers to the core electrons which are the same as for the element neon (Ne), the last noble gas before phosphorus in the periodic table. The valence electrons (here 3s 2 3p 3) are written explicitly for all atoms. Electron configurations of elements beyond hassium (element 108) have never been measured; predictions are used below.

7. Template:Periodic table - Wikipedia

   en.wikipedia.org/wiki/Template:Periodic_table

   17 18; Hydrogen & alkali metals ... Primordial From decay Synthetic Border shows natural occurrence of the element. ... This periodic table is the prime form ...

8. Portal:Chemistry/Elements/Periodic Table - Wikipedia

   en.wikipedia.org/.../Elements/Periodic_Table

   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 ...

9. Template:Periodic table (with pictures) - Wikipedia

   en.wikipedia.org/wiki/Template:Periodic_table...

   2 Key. 3 See also. Toggle the table of contents. Template: Periodic table (with pictures) ... Redirect: element has not been isolated in macroscopic amounts in pure form: