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← JEE Main 2026 · 5 Apr · Shift 1
ChemistryInteger+4 / -1Question 71 of 75

JEE Main 2026 · 5 Apr · Shift 1, Chemistry question 71

Consider the following species:

BrFX5\ce{BrF5}, XeFX5X−\ce{XeF5^-}, BFX4X−\ce{BF4^-}, IClX4X−\ce{ICl4^-}, XeFX4\ce{XeF4}, SFX4\ce{SF4}, NHX4X+\ce{NH4^+}, ClFX3\ce{ClF3}, XeFX2\ce{XeF2}, IClX2X−\ce{ICl2^-}

Number of species having sp3dsp^3d hybridized central atom is ________.

Answer and worked solution

Official answer: 4

Electron domains (bond pairs + lone pairs) at the central atom.

Species Domains Hybridisation
BrFX5\ce{BrF5}, IClX4X−\ce{ICl4-}, XeFX4\ce{XeF4} 6 sp3d2sp^3d^2
XeFX5X−\ce{XeF5-} 7 sp3d3sp^3d^3
BFX4X−\ce{BF4-}, NHX4X+\ce{NH4+} 4 sp3sp^3
SFX4\ce{SF4}, ClFX3\ce{ClF3}, XeFX2\ce{XeF2}, IClX2X−\ce{ICl2-} 5 sp3dsp^3d

Count: 4.

Answer: 4