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a
HI cannot be prepared by heating KI with conc. H2SO4
b
BrO3− and XeO3are isostructural
c
Bi5+ is stronger oxidizing agent among Bi5+ and Sb5+
d
Both NH3 and N3- ion are isostructural
answer is A.
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Detailed Solution
(A) The HI formed initially is oxidized by H2SO4 into iodine. (B) Both have pyramidal geometry. (C) Due to inert pair effect, Bi5+ gains two electrons and is converted into Bi3+ (D) is not linear while N3− is linear.