why is the bond energy of S-S greater than O-O?

i cant find a reason for any of such trends..................................please answer soon

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  • Anonymous
    1 decade ago
    Favorite Answer

    due to small size the lone pair of electrons on oxygen atoms repel the bond pair of O-O bond to a greater extent than the lone pair of electrons on the sulphur atoms in S-S bond....as a result S-S bond (bond energy=213 kj/mole)is much more stronger than O-O(bond energy = 138 kj/mole) bond and hence sulphur has the much stronger tendency for catenation than oxygen ....

    furthur as the size of atom increases down the group from sulphur to polonium the strength of of element-element bond decreases and hence tendency for catenation decreases accordingly.....

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  • Melvin
    Lv 4
    1 decade ago

    I was more than happy to answer your question, until I read you demanding to answer soon. You need to learn how to be patient and courteous.

    Thanks

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