1.

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

Answer»

`Bi_(2)O_(5)`
`BiF_(5)`
`BiCl_(5)`
`Bi_(2)S_(5)`

Solution :`F_2` being the STRONGEST oxidisng agent, OXIDISES Bi to its HIGHEST O.S. of +5 in `BiF_5`.


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