Question:
Based on VSEPR model, match the xenon compounds given in List-I with the corresponding geometries and the number of lone pairs on xenon given in List-II and choose the correct option.
List I
List II
(P) XeF2 (1) Trigonal bipyramidal and two lone pair of electrons (Q) XeF4 (2) Tetrahedral and one lone pair of electrons (R) XeO3 (3) Octahedral and two lone pair of electrons (S) XeO3F2 (4) Trigonal bipyramidal and no lone pair of electrons (5) Trigonal bipyramidal and three lone pair of electrons
Based on VSEPR model, match the xenon compounds given in List-I with the corresponding geometries and the number of lone pairs on xenon given in List-II and choose the correct option.
List I | List II | ||
| (P) | XeF2 | (1) | Trigonal bipyramidal and two lone pair of electrons |
| (Q) | XeF4 | (2) | Tetrahedral and one lone pair of electrons |
| (R) | XeO3 | (3) | Octahedral and two lone pair of electrons |
| (S) | XeO3F2 | (4) | Trigonal bipyramidal and no lone pair of electrons |
| (5) | Trigonal bipyramidal and three lone pair of electrons | ||
Updated On: Mar 7, 2025
- P-5, Q-2, R-3, S-1
- P-5, Q-3, R-2, S-4
- P-4, Q-3, R-2, S-1
- P-4, Q-2, R-5, S-3
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The Correct Option is B
Solution and Explanation
Step 1: Determining the Geometry and Lone Pairs of Each Xenon Compound
- (P) XeF2
- Central atom: Xe
- Valence electrons: 8
- Bonding pairs: 2 (due to 2 F atoms)
- Lone pairs: (3 lone pairs)
- Geometry: Trigonal bipyramidal (linear shape due to lone pairs in equatorial positions)
- Matches: (5)
- (Q) XeF4
- Central atom: Xe
- Valence electrons: 8
- Bonding pairs: 4 (due to 4 F atoms)
- Lone pairs: (2 lone pairs)
- Geometry: Octahedral (square planar shape due to lone pairs at axial positions)
- Matches: (3)
- (R) XeO3
- Central atom: Xe
- Valence electrons: 8
- Bonding pairs: 3 (due to 3 O atoms)
- Lone pairs: (1 lone pair)
- Geometry: Tetrahedral (pyramidal shape due to lone pair)
- Matches: (2)
- (S) XeOF4
- Central atom: Xe
- Valence electrons: 8
- Bonding pairs: 5 (3 O atoms and 2 F atoms)
- Lone pairs: (0 lone pairs)
- Geometry: Trigonal bipyramidal (no lone pairs present)
- Matches: (4)
Step 2: Conclusion
- (P) → (5)
- (Q) → (3)
- (R) → (2)
- (S) → (4)
Thus, the correct answer is (B) P-5, Q-3, R-2, S-4.
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