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Why are pentahalides more covalent than ...

Why are pentahalides more covalent than trihalides?

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According to Fajan's rules, covalent character increases with decrease in size of covalent `E^(5+)` (E=element of group 15) is smaller than `E^(3+)`. Therefore pentahalides in which element is in `+5`oxidation state are more covalent than trihalides m which the element is in `+3` oxidation state.
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Knowledge Check

  • is more stable than because

    A
    `180^(@)` location of `NO_(2)` and `overset(Theta)(C )H_(2)` in (I)
    B
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    C
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    D
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    A
    it has more resonating structures than anilinium ion
    B
    it has less resonating structures than anilinium ion
    C
    it has more `pi`-bonding than anilinium ion
    D
    None of the above

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