<p>Structural formula of the methane molecule, CH<sub>4</sub>. The molecule belongs to the T<sub>d</sub><a href="https://en.wikipedia.org/wiki/Molecular_symmetry#Common_point_groups" class="extiw" title="en:Molecular symmetry">point group</a>.
</p>
Structural information (determined by microwave spectroscopy) from <a rel="nofollow" class="external text" href="http://www.hbcpnetbase.com/">CRC Handbook, 88<sup>th</sup> edition</a>.
Ben Mills
<span class="int-own-work" lang="en">Own work</span>