(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

prove that Cs is a subgroup of C3v group

2. Relevant equations

3. The attempt at a solution

There are only two elements in Cs group, E and C_sigma. C_sigma is plane reflection operator which does not seem to exist in C3v group. This leads to my question here.

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# Homework Help: How to prove Cs is a subgroup of C3v?

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