Vsepr & Hybridisation
Which pair correctly matches molecule with geometry?
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About This Question
- Subject
- chemistry
- Chapter
- chemical bonding and molecular structure
- Topic
- vsepr & hybridisation
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
XeF4 – square planar
- XeF4 Analysis: Xe has 8 valence electrons. 4 are used for bonding with F, leaving 4 electrons as 2 lone pairs.
- Steric Number = 4+2=6.
- Geometry = Octahedral; Molecular Shape (VSEPR) = Square Planar (lone pairs at axial positions).
- Check others:
- BF3: 3 bonds + 0 LP ⟹ Trigonal Planar (not pyramidal).
- SO2: 2 σ bonds + 1 LP ⟹ Bent (not linear).
- NH4+: 4 bonds + 0 LP ⟹ Tetrahedral (not trigonal planar).
This medium difficulty chemistry question is from the chapter chemical bonding and molecular structure, covering the topic of vsepr & hybridisation. It appeared in the 2025 exam.
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