why BiF5 molecule exists despite of non existence of other bismuth pentahalides?

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Solution

Bismuth due to inert pair effect exist with only +3 oxidation state. +5 oxidation state is uncommon for Bi. So bismuth does not form pentahalide. But due to the small size and high electronegativity of fluorine only BiF₅ exist.

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why BiF5 molecule exists despite of non existence of other bismuth pentahalides?

Bismuth due to inert pair effect exist with only +3 oxidation state. +5 oxidation state is uncommon for Bi. So bismuth does not form pentahalide. But due to the small size and high electronegativity of fluorine only BiF​5 exist.

Bismuth due to inert pair effect exist with only +3 oxidation state. +5 oxidation state is uncommon for Bi. So bismuth does not form pentahalide. But due to the small size and high electronegativity of fluorine only BiF₅ exist.