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JEE Main Chemistry question

ChemistryChemical Bonding and Molecular StructureJEE Main

Hybridisation of the underlined atom changes in

Answer: (A)

Solution

has Al with only 3 bond pairs and an empty orbital, so Al is hybridised (trigonal planar, electron-deficient); on accepting a hydride ion to form , Al gains a fourth bond pair and becomes hybridised (tetrahedral) — a genuine change in hybridisation. By

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Question ID VK-155944