I am searching about some basics in chemistry. I was looking for the molecular structure of all periodic table element molecules. eg: Hydrogen molecule: as $\ce{H2}$; structure:enter image description here

I was able to find out several others too. But when I reach to certain molecules like $\ce{He}$ I was not able to find out the structure.
Does anyone know from where I can get the molecular structure of all periodic table elements. And if not, could you please explain the case of Helium and other noble gases. I am very poor in chemistry. Anyone showing me a reference on how to find the answer is welcome. Thanks in advance, and Happy New Year to all... :)

  • $\begingroup$ Welcome to chemistry.SE! Had you any questions about the workings of the site, visit the help center, or you can just take a little tour about how chem.SE works. I added the "reference request" tag so that your question doesn't get many downvotes. This link shows how good questions are asked. I recommend you take a look at what's written there. $\endgroup$ – M.A.R. Dec 31 '14 at 16:41
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    $\begingroup$ 1. All elements do not form "molecules", with itself, necessarily 2.Helium and other "noble gases" are unreactive (cannot form molecules under normal conditions) $\endgroup$ – Gowtham Dec 31 '14 at 16:42

The noble gases (group $18$) are rather inert, so their molecule is just a single atom.

The following elements usually consist of molecules made up of two atoms: $\ce{H2}$, $\ce{N2}$, $\ce{O2}$, $\ce{F2}$, $\ce{Cl2}$, $\ce{Br2}$, $\ce{I2}$.

Astatine ($\ce{At}$) should also belong to that list but it is not confirmed because of its short half-life.

Sulfur exists as ($\ce{S8}$); phosphorus exists as ($\ce{P4}$).

The structure of boron ($\ce{B}$), arsenic ($\ce{As}$), selenium ($\ce{Se}$), antimony ($\ce{Sb}$), and tellurium ($\ce{Te}$) are rather complicated.

Carbon ($\ce{C}$) has too many forms, but its most common forms are graphite and diamond, which is demonstrated below.

Silicon ($\ce{Si}$) and germanium ($\ce{Ge}$) both assume the structure of diamond.

Metals all adopt a metallic structure. Read more here.


You might go to here to learn about the elements I skipped.




Carbon (as graphite):

The common structure of diamond, silicon, and germanium (left diamond, right graphite):


All images are from Wikipedia.

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  • $\begingroup$ @Martin-γƒžγƒΌγƒγƒ³ Sorry, please give me a moment. $\endgroup$ – DHMO Sep 20 '16 at 13:27
  • $\begingroup$ Also note that this is a reference-request. Please refer to a (or more) publications to read up on. $\endgroup$ – Martin - マーチン Sep 20 '16 at 13:28

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