NEETChemistryp Block Elements (Group 15, 16, 17 & 18)
Three Xenon compounds A, B, and C have square planar, linear, and square pyramidal geometries respectively. The number of lone pairs on the central Xenon atom in compounds A, B, and C are respectively:
Options
- A1, 2, 3
- B2, 2, 1
- C2, 3, 1
- D1, 3, 2
Correct answer
C. 2, 3, 1
Step-by-step solution
For a Xenon compound to have a square planar geometry (e.g., XeF ₄ ), the central Xe atom undergoes sp^3d^2 hybridization with 4 bond pairs and 2 lone pairs. For a linear geometry (e.g., XeF ₂ ), the central Xe atom undergoes sp^3d hybridization with 2 bond pairs and 3 lone pairs. For a square pyramidal geometry (e.g., XeOF ₄ ), the central Xe atom undergoes sp^3d^2 hybridization with 5 bond pairs and 1 lone pair. Therefore, the number of lone pairs on the central Xenon atom in compounds A, B, and C are 2, 3, and 1