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Which of the following statements is/are correct?

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HI cannot be prepared by heating KI with conc. $H_{2} S O_{4}$

${BrO}_{3}^{-} and {XeO}_{3}$ are isostructural

$B i^{5 +}$ is stronger oxidizing agent among $B i^{5 +} and S b^{5 +}$

Both ${NH}_{3} and N_{3}^{-} ion$ are isostructural

answer is A.

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Detailed Solution

1) The HI formed initially is oxidized by $H_{2} {SO}_{4}$ into iodine.

2) Both have pyramidal geometry.

3) Due to inert pair effect, $B i^{5 +}$ gains two electrons and is converted into $B i^{3 +}$

4) $N H_{3}$ is not linear while $N_{3}^{-}$ is linear.

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