Question

The type of hybrid orbital used by iodine atom in hypoiodolous acid molecule are?1-SP3 2-SP 3-sp3d 4-SP2

Answer 1

Hypoiodous acid is denoted as HOI has 3 lone pairs on the Iodine atom. The structure of the acid (in the attachment) shows that the hybridisation followed by the Iodine atom is sp3. We can also confirm this through the formula to find the hybridisation of the central atom (here it is iodine)
HYBRIDISATION=0.5X(No.of Valence electrons around the central atom+No.of monovalent atoms surrounding the central atom-No.of cations+No. of anions)
Therefore,
HYBRIDISATION=0.5(7+1-0+0)=4
4 denotes that the central atom shows sp3 hybridisation..

HENCE, OPTION 1)sp3 is the correct one..

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