I understand the fact that the molecule has a principal axis of rotation of C6 however when following the point gorup flow chart why is the answer to the second question NO when it contains two C3 axis? Hence the answer should be a YES right? (I understand the molecule has C2 axis as well) 
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Gurjeet Singh Khurana
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3Only different axes count. – Ivan Neretin Feb 26 '16 at 10:52
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2Also, you chart seems to miss the groups $T,;T_h,;O,;\text{ and }I$. – Ivan Neretin Feb 26 '16 at 10:57
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2As @IvanNeretin stated - There's rather 1 C6 axis, than 2 C3 axis – lcnittl Feb 26 '16 at 11:24
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Does it have two or more $C_2$ axes with $n>2$?
This question is asking if there is more than one $C_{n>2}$ axis not if there is more than one $C_{n>2}$ symmetry operation.
Yes, benzene has some $C_3$ operations. However, as pointed out in the comments, the $C_3$ axis lies along the $C_6$ axis - both run through the center of the ring perpendicular to the plane of the molecule. This axis is also a $C_2$ axis. There is only one $C_{n>2}$ axis - it just happens to be both a $C_6$ and a $C_2$ axis. All other rotation axes in benzene are $C_2$.
Ben Norris
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While reading https://www.nature.com/articles/srep25670 I double checked the definition of $D_{6h}$ and this question came up in a search. While it's not related to benzene per se the following question in Math SE is about graphene-like xene materials and probably requires an understanding of symmetries to address. Any thoughts or recommendations? Determining if a coincident point in a pair of rotated hexagonal lattices is closest to the origin – uhoh Aug 30 '20 at 03:42