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Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π  electrons. However, the lone pair creates the maximum repulsive effect.
Q. Incorrect order about bond angles is :
  • a)
    H2O > H2S > H2Se > H2Te
  • b)
    C2H2 > C2H4 > CH4 > NH3
  • c)
    SF6 < NH3 < H2O < OF2
  • d)
    ClO2 > H2O > H2S > SF6
Correct answer is option 'C'. Can you explain this answer?
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Valence shell electron pair repulsion theory (VSEPR) provides a method...
Understanding Bond Angles
The bond angles in molecules are influenced by the molecular geometry and the presence of lone pairs of electrons, which exert greater repulsive forces than bonding pairs. Let's examine the incorrect order of bond angles provided in option 'C'.
Analysis of Option C
- SF6: Sulfur hexafluoride has an octahedral shape with bond angles of 90 degrees. There are no lone pairs that affect the bond angles.
- NH3: Ammonia has a trigonal pyramidal shape due to the presence of one lone pair, resulting in bond angles of approximately 107 degrees. The lone pair pushes the hydrogen atoms closer together, reducing the bond angle from the ideal tetrahedral angle of 109.5 degrees.
- H2O: Water has a bent shape with two lone pairs, resulting in bond angles of about 104.5 degrees. The lone pairs exert strong repulsive forces, further decreasing the bond angle compared to NH3.
- OF2: Oxygen difluoride also has a bent structure with two lone pairs, leading to bond angles around 102 degrees. Similar to water, the lone pairs are significant in reducing the bond angle.
Conclusion
The expected order based on bond angles should be:
- SF6 (90 degrees) < of2="" (102="" degrees)="" />< h2o="" (104.5="" degrees)="" />< nh3="" (107="" />
Thus, the order provided in option 'C' is incorrect because it does not accurately reflect the increasing bond angles due to the influence of lone pairs. The presence of lone pairs in NH3, H2O, and OF2 plays a critical role in reducing bond angles compared to SF6.
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Valence shell electron-pair repulsion theory predicts the shape of a molecule by considering the most stable configuration of the bond angles in the molecule. The main points of the theory are(i) Electron pairs in the valence shell of central atom of a molecule, whether bonding or lone pairs are regarded as occupying localised orbitals. These orbitals arrange themselves so as to minimize the mutual electronic repulsions.(ii) The magnitude of the different types of electronic repulsions follow the order given below:Lone pair-lone pair> lone pair-bonding pair > bonding pair-bonding pair. These repulsive forces alter the bond angles of the molecule or ion.(iii) The electron repulsion between two pairs of electrons will be minimum if they stay as far as possible. On this basis, several studied. have been doneWhich of the following statements is correct ?

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Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer?
Question Description
Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer?.
Solutions for Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for JEE. Download more important topics, notes, lectures and mock test series for JEE Exam by signing up for free.
Here you can find the meaning of Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer?, a detailed solution for Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Valence shell electron pair repulsion theory (VSEPR) provides a method for predicting the shape of molecules, based on the electron pair electrostatic repulsion. According to VSEPR model, molecules adopt geometries in which their valence electron pairs position themselves as far from each other as possible. The VSEPR model considers double and triple bonds to have slightly greater repulsive effects than single bonds because of the repulsive effect of π electrons. However, the lone pair creates the maximum repulsive effect.Q.Incorrect order about bond angles is :a)H2O > H2S > H2Se > H2Teb)C2H2 > C2H4 > CH4 > NH3c)SF6 < NH3 < H2O < OF2d)ClO2 > H2O > H2S > SF6Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice JEE tests.
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