JEE Advanced Chemistry question

ChemistryChemical Bonding and Molecular StructureJEE Advanced

How many of the following have a Cl atom in sp3 hybridised state? ClO2, Cl2O, Cl2O7, Cl2O6, ClO4−

Answer: 5

Solution

Using the steric-number method (counting each bonding region plus each lone pair, and counting a single unpaired electron in an odd-electron species as occupying its own hybrid orbital): in ClO2, Cl has 2 bond regions, 1 lone pair and 1 unpaired electron, giving steric number 4 → sp3. In Cl2O, each terminal Cl is

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Question ID VK-159558