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a
SbF3
b
BiF3
c
BiCl3
d
NF3
answer is B.
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Detailed Solution
Down the group As Metallic character increases,Ionic character in halides increases15th group is basically a non-metal group so no.of Ionic compounds are very less'Bi' being a metal forms an ionic fluoride, BiF3The only halide of 15th group which is ionic is BiF3