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Isostructural species

This type of question, asked 2 times: 2021 Paper 1, 2 Apr 2026 S2. All 2 questions below, oldest first.

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  1. Question 1

    2021 Paper 1

    33
    Which of the following are isostructural pairs? (A) SO42−SO_{4}^{2 -} and CrO42−CrO_{4}^{2 -} (B) SiCl4SiCl_{4} and TiCl4TiCl_{4} (C) NH3NH_{3} and NO3−NO_{3}^{-} (D) BCl3BCl_{3} and BrCl3BrCl_{3}

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  2. Question 2

    2 Apr 2026 S2

    28
    SF4SF_{4} is isostructural with : (A) BrF4⊖{BrF}_{4}^{\ominus} (B) CH4{CH}_{4} (C) IF4⊕{IF}_{4}^{\oplus} (D) XeF4{XeF}_{4} (E) XeO2 F2{XeO}_{2}{\text{ }F}_{2} Choose the correct answer from the options given below:

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