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Why are pentahalides more covalent than ...

Why are pentahalides more covalent than trihalides ?

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Higher the positive oxidation state of central atom, more will be its polarising power, which in turn increases the covalent character of the bond formed between the central atom and the halogen atom. In pentahalides, the central atom is in +5 oxidation state while in trihalides, it is in +3 oxidation state. Therefore, pentahalides are more covalent than trihalides.
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Knowledge Check

  • (A) SnCl_(4) is more covalent than SnCl_(2) (R ) Compound with higher oxidation state of metal is more covalent than with lower oxidation state

    A
    Both (A) and (R ) are true and (R ) is the correct explanation of (A)
    B
    Both (A) and (R ) are true and (R ) is not the correct explanation of (A)
    C
    (A) is true but (R ) is false
    D
    Both (A) and (R ) are false

  • Nitrogen trihalides are

    A
    Lewis acid
    B
    Lewis base
    C
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    D
    Arrhenius base

  • Nitrogen trihalides are

    A
    Lewis acid
    B
    Lewis base
    C
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