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The hydrogen bond is strongest in : (1986 - 1 Mark)
- a)O – H...........S
- b)S – H...........O
- c)F – H...........F
- d)F – H...........O
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
The hydrogen bond is strongest in : (1986 - 1 Mark)a)O – H.........
Explanation:
Hydrogen Bonding:
Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom such as oxygen, nitrogen, or fluorine.
Strength of Hydrogen Bond:
The strength of a hydrogen bond depends on the electronegativity of the atoms involved in the bond. The greater the difference in electronegativity between the hydrogen atom and the atom to which it is bonded, the stronger the hydrogen bond.
Comparison of Options:
a) O – H:
- Oxygen is highly electronegative, making the O-H bond strong.
- However, the hydrogen bond formed with another molecule may not be as strong as in other options.
b) S – H:
- Sulfur is less electronegative than oxygen, resulting in a weaker S-H bond.
- Therefore, the hydrogen bond formed with another molecule would be weaker compared to other options.
c) F – H:
- Fluorine is the most electronegative element, resulting in a very strong F-H bond.
- The hydrogen bond formed with another molecule involving fluorine would be the strongest among the given options.
d) F – H:
- Similar to option c, the F-H bond would be strong due to the high electronegativity of fluorine.
- However, the hydrogen bond formed with oxygen may not be as strong as in option c.
Therefore, option c, F – H, would have the strongest hydrogen bond among the given options due to the high electronegativity of fluorine.
Hydrogen Bonding:
Hydrogen bonding is a type of intermolecular force that occurs when a hydrogen atom is bonded to a highly electronegative atom such as oxygen, nitrogen, or fluorine.
Strength of Hydrogen Bond:
The strength of a hydrogen bond depends on the electronegativity of the atoms involved in the bond. The greater the difference in electronegativity between the hydrogen atom and the atom to which it is bonded, the stronger the hydrogen bond.
Comparison of Options:
a) O – H:
- Oxygen is highly electronegative, making the O-H bond strong.
- However, the hydrogen bond formed with another molecule may not be as strong as in other options.
b) S – H:
- Sulfur is less electronegative than oxygen, resulting in a weaker S-H bond.
- Therefore, the hydrogen bond formed with another molecule would be weaker compared to other options.
c) F – H:
- Fluorine is the most electronegative element, resulting in a very strong F-H bond.
- The hydrogen bond formed with another molecule involving fluorine would be the strongest among the given options.
d) F – H:
- Similar to option c, the F-H bond would be strong due to the high electronegativity of fluorine.
- However, the hydrogen bond formed with oxygen may not be as strong as in option c.
Therefore, option c, F – H, would have the strongest hydrogen bond among the given options due to the high electronegativity of fluorine.
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Community Answer
The hydrogen bond is strongest in : (1986 - 1 Mark)a)O – H.........
The strength of an individual H bond depends on the polarity of the H-X bond and therefore on the electronegativity of X ( the more delta positive the H atom, the stronger the electrostatic force of attraction between it and a lone pair of electrons). Thus, on a per bond basis, HF H bonding is strongest.
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