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Why are pentahaildes more covalent than ...

Why are pentahaildes more covalent than tirhalides

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Higher the positive oxidation state of central atom, .+5. and .+3. in pentahalides and trihalides respectively more will be. its polarising power which in turn, increases the covalent character of bond formed between the central atom and the other atom
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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
    `-NO_(2)` operate both `-I` and `-M` in (I)
    C
    `-I` in (II) is weaker than (I)
    D
    Due to steric repulsion

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