I have encountered this set of covalent radii, on EnvironmentalChemistry.com. I am very curious what source the data come from, which they do not mention. For example, who put forward this set of data in which journal in which year?
PS: The values mentioned above look like (Å):
0.32 0.93 1.23 0.90 0.82 0.77 0.75 0.773 0.72 0.71 ......
PS: Part of the values have even appeared on Advanced Inorganic Chemistry. So this set of value should be quite official.
PS: The data is used in the "add_mesh_cluster.py" of blender - 2.65 of "Fresh Open Source Software archive". Sorry I am limited up to two links in the post.
PS: Other data exist. For example, the covalent radii Wikipedia page, data come from one Dalton Transactions article. Differences exist. For example, for He, this set gives 0.28 Å.