Changes related to "Helium"

Helium
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Show new changes starting from 14:06, 23 July 2019
   
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21 July 2019

N    18:22  Covalent radius‎ (diff | hist) . . (+1,048). . Mabus (Talk | contribs) (Created page with "{{Stub}} The '''covalent radius''', ''r''<sub>cov</sub>, is a measure of the size of an atom that forms part of one covalent bond. The covalent radius is usually meas...")
N    18:19  Crystal structure‎ (diff | hist) . . (+729). . Mabus (Talk | contribs) (Created page with "{{Stub}} In crystallography, '''crystal structure''' is a description of the ordered arrangement of atoms, ions or molecules in a crystalline material. Ordered structures...")
     17:31  Chemical symbol‎‎ (2 changes | history) . . (+66). . [Mabus‎ (2×)]
     17:31 (cur | prev) . . (+4). . Mabus (Talk | contribs)
     17:31 (cur | prev) . . (+62). . Mabus (Talk | contribs)