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Question

Elements of the group-15 form compounds in +5 oxidation state. However, bismuth forms only one well-characterized compound in +5 oxidation state. The compound is:

A
Bi2O5
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B
BiF5
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C
BiCl5
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D
Bi2S5
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Solution

The correct option is B BiF5
Due to inert pair effect bismuth only Exhibit +3 oxidation state and forms trihalides only.But due to samll size and high electronegativity of Florine Bismuth forms BiF5 only.
Hence option B is correct.

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