how many sigma bonds are there in anthracean?
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2pi bonds.....,............
kartik82:
wrong! there are 7π bonds ....and i asked about sigma bond
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There is no more than 1 sigma bondbetween any two atoms. Molecules with rings have additional sigma bonds, such as benzene rings, which have 6 C−C sigma bonds within the ring for 6 carbon atoms. The anthracene molecule, C14H10, has three rings so that the rule gives the number of sigma bonds as 24 + 3 − 1 =26.
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