Here it is
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Isostructural species are the one which have same structures irrespective of different hybridization or electron domain geometries.The final shape of the molecule should be the same for them to be isostructural.Like CO₂ and XeF₂ are isostructural but one has sp² hybridization and other has sp³d hybridization.
Draw the Lewis dot structure of all the species and compare shapes of the molecules
Draw the Lewis dot structure of all the species and compare shapes of the molecules

Draw the Lewis dot structure of all the species and compare shapes of the molecules


1) Carbonate ions are trigonal planar ,Nitrates are also trigonal planar so they are isostructural
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2) PCl₄ ⁺ is tetrahedron and silicon tetrachloride is also tetrahedral so they are isostructural.
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3)PF₅ is trigonal bipyramidal but BrF₅ is square pyramidal so they are not isostructural.

4)AlF₆^{3 -} is octahedral and SF₆ is also octahedral so there isostructural


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