JEE Main 2026 — Jan 24, Shift 1 — Chemistry solution

JEE Main2026Jan 24, Shift 1Chemistry

Among the following, the CORRECT combinations are :

A. $I F_{3} \to$ T-shaped ( $s p^{3} d$ )

B. $I F_{5} \to$ Square pyramidal ( $s p^{3} d^{2}$ )

C. $I F_{7} \to$ Pentagonal bipyramidal ( $s p^{3} d^{3}$ )

D. $C l O_{4}^{-} \to$ Square planar ( $s p^{3} d$ )

Choose the correct answer from the options given below :

Solution

A. $I F_{3}$ : 5 electron pairs around I (3 bonding + 2 lone pairs) → $s p^{3} d$ , T-shaped. ✓

B. $I F_{5}$ : 6 electron pairs (5 bonding + 1 lone pair) → $s p^{3} d^{2}$ , square pyramidal. ✓

C. $I F_{7}$ : 7 bonding pairs → $s p^{3} d^{3}$ , pentagonal bipyramidal. ✓

D. $C l O_{4}^{-}$ : 4 bonding pairs, no lone pairs on Cl → $s p^{3}$ , tetrahedral (not square planar, not $s p^{3} d$ ). ✗

$∴$ A, B and C are correct.

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