The number of interhalogens from the following having square pyramidal structure is: $\text{ClF}_3$, $\text{IF}_7$, $\text{BrF}_5$, $\text{BrF}_3$, $\text{I}_2\text{Cl}_6$, $\text{IF}_5$, $\text{ClF}$, $\text{ClF}_5$

JEE Main · 2022 · 28 Jul 2022 · Shift 1 · p-Block Elements

The number of interhalogens from the following having square pyramidal structure is:

ClF_{3}

IF_{7}

BrF_{5}

BrF_{3}

I_{2} Cl_{6}

IF_{5}

ClF

ClF_{5}

Answer: 3

Solution

Square pyramidal geometry corresponds to

s p^{3} d^{2}

hybridization with one lone pair (AX₅E₁ type, VSEPR notation).

Analyzing each interhalogen:

$ClF_{3}$ : T-shaped (AX₃E₂)
$IF_{7}$ : Pentagonal bipyramidal (AX₇)
$BrF_{5}$ : Square pyramidal ✓ (AX₅E₁)
$BrF_{3}$ : T-shaped (AX₃E₂)
$I_{2} Cl_{6}$ : Molecular compound, not a single interhalogen
$IF_{5}$ : Square pyramidal ✓ (AX₅E₁)
$ClF$ : Linear (AX₁)
$ClF_{5}$ : Square pyramidal ✓ (AX₅E₁)

Three interhalogens have square pyramidal structure:

BrF_{5}

IF_{5}

, and

ClF_{5}

.

Answer: 3

JEE Main · 2022 · 28 Jul 2022 · Shift 1 · Integer answer

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