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Chemical Bonding and Molecular Structure question

2007 · Q97
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Chemical Bonding and Molecular Structure question

2007 · Q97

NEETChemistryChemical Bonding and Molecular StructureMCQ+4 / −1
In which of the following pairs, the two species are isostructural?
  1. A
    SO32−{_3^{2 - }}32−​ and NO3−{_3^{ - }}3−​
  2. B
    BF3 and NF3
  3. C
    BrO3−{_3^{ - }}3−​ and XeO3
  4. D
    SF4 and XeF4
View written solutionFree

Correct answer: C

Hybridisation of Br in BrO3– :

= 12(7+0−0+1){1 \over 2}\left( {7 + 0 - 0 + 1} \right)21​(7+0−0+1) = 4

Four hybrid orbital means sp3 hybridisation.

Hybridisation of Xe in XeO3 :

= 12(8+0−0+0){1 \over 2}\left( {8 + 0 - 0 + 0} \right)21​(8+0−0+0) = 4

Four hybrid orbital means sp3 hybridisation.

Thus, both BrO3– and XeO3 are sp3 hybridised with three bond pairs of electrons and one lone pair of electrons and results in trigonal pyramidal shape.

AIPMT 2007 Chemistry - Chemical Bonding and Molecular Structure Question 68 English Explanation

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