VSEPR theory and shapes of molecules
Top questions
See all →- Match List - I with List - IIList-I: A. XeO_3 B. XeF_2 C. XeOF_4 D. XeF_6List-II: I. sp^3d; linear II. sp^3; pyramidal III. sp^3d^3; distorted octahedral IV. sp^3d^2; square pyramidalChoose the correct answer from the options given below : Answer: 1. A-II, B-I, C-IV, D-III Key idea: count bond pairs and lone pairs on Xe. XeO₃ : 3 bonds + 1 lone pair, sp³ , pyramidal (II). XeF₂... 1
- Match List I with List II.List I (Compound): A. NH_3 B. BrF_5 C. XeF_4 D. SF_6List II (Shape/geometry): I. Trigonal Pyramidal II. Square Planar III. Octahedral IV. Square PyramidalChoose the correct answer from the options given below: Answer: 2. A-I, B-IV, C-II, D-III Key idea: use VSEPR to get the shape of each molecule. NH₃ : 3 bond pairs + 1 lone pair gives trigonal pyr... 1
- Amongst the following which one will have maximum 'lone pair - lone pair' electron repulsions ? Answer: 1. XeF₂ Key idea: compare the number of lone pairs on the central atom and their arrangement. XeF₂ : 3 lone pairs on Xe (trigonal bi... 1
- The structures of beryllium chloride in solid state and vapour phase, are : Answer: 1. Chain and dimer, respectively Key idea: BeCl₂ is electron deficient and completes its octet by bridging. In the solid state it fo... 1
- Match List - I with List - II.List - I : (a) PCl_5 (b) SF_6 (c) BrF_5 (d) BF_3List - II : (i) Square pyramidal (ii) Trigonal planar (iii) Octahedral (iv) Trigonal bipyramidalChoose the correct answer from the options given below. Answer: 1. (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii) Key idea: use VSEPR to find shapes. PCl₅ : 5 bond pairs, trigonal bipyramidal (iv) SF₆ : 6... 1
- In the structure of ClF_3, the number of lone pairs of electrons on central atom 'Cl' is Answer: 3. two Count electron pairs on Cl in ClF₃ : Cl has 7 valence electrons, 3 are used for bonds with F, leaving 4 electrons = 2 lone pa... 1