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    WHY is the C-Br bond weaker than the C-Cl bond?
    Thanks
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    Think about the radius of the halides down a group
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    (Original post by Blob2491)
    Think about the radius of the halides down a group
    I think the radius increases down the group. How does this have an effect of making the bond weaker?
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    (Original post by krisshP)
    I think the radius increases down the group. How does this have an effect of making the bond weaker?
    longer bond = weaker bond
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    If the radius increases, the valence electrons will be further from the nucleus, thus decreasing the nuclear attraction between the nucleus and the valence electrons. Weaker attraction means less energy required to break a bond.

    Sent from my GT-N7000
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    (Original post by charco)
    longer bond = weaker bond

    (Original post by vxrz)
    If the radius increases, the valence electrons will be further from the nucleus, thus decreasing the nuclear attraction between the nucleus and the valence electrons. Weaker attraction means less energy required to break a bond.

    Sent from my GT-N7000
    I understand, so thanks
 
 
 
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