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The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:
This variation in bond angle is a result of
(i) the increasing repulsion between hydrogen atoms as the bond length decreases
(ii) the number of non-bonding electron pairs in the molecule
(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron pair
  • a)
    (i), (ii) and (iii)
  • b)
    (i) and (ii)
  • c)
    (ii) and (iii)
  • d)
    (i)
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The bond lengths and bond angles in the molecules of methane, ammonia...
In methane, ammonia and water, the central atom is sp3 hybridised and expected bond angle is 109.5°.
However, the bond angle changes due to the presence of lone pairs of electrons.
This is because: lone pair-lone pair repulsions > lone pair-bond pair repulsions > bond pair-bond pair repulsions.
Methane (no lone pair) has a regular tetrahedral geometry with bond angle of 109.5°.
Ammonia (one lone pair) has a pyramidal geometry with bond angle of 107°.
Water (two lone pairs) has an angular bent geometry with bond angle of 104.5°.
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The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:This variation in bond angle is a result of(i) the increasing repulsion between hydrogen atoms as the bond length decreases(ii) the number of non-bonding electron pairs in the molecule(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron paira)(i), (ii) and (iii)b)(i) and (ii)c)(ii) and (iii)d)(i)Correct answer is option 'C'. Can you explain this answer?
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The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:This variation in bond angle is a result of(i) the increasing repulsion between hydrogen atoms as the bond length decreases(ii) the number of non-bonding electron pairs in the molecule(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron paira)(i), (ii) and (iii)b)(i) and (ii)c)(ii) and (iii)d)(i)Correct 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 The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:This variation in bond angle is a result of(i) the increasing repulsion between hydrogen atoms as the bond length decreases(ii) the number of non-bonding electron pairs in the molecule(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron paira)(i), (ii) and (iii)b)(i) and (ii)c)(ii) and (iii)d)(i)Correct 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 The bond lengths and bond angles in the molecules of methane, ammonia and water are given below:This variation in bond angle is a result of(i) the increasing repulsion between hydrogen atoms as the bond length decreases(ii) the number of non-bonding electron pairs in the molecule(iii) a non-bonding electron pair having a greater repulsive force than a bonding electron paira)(i), (ii) and (iii)b)(i) and (ii)c)(ii) and (iii)d)(i)Correct answer is option 'C'. Can you explain this answer?.
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