SSC
BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is a hydrogen bond?
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When one substance is dissolved into another.
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Bonds between water and other molecules.
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A weak intermolecular force.
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Polar molecules that can attract each other.
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Explanation:
Detailed explanation-1: -The hydrogen bond is a weak bond. The strength of the hydrogen bond is in-between the weak Van der Waals forces and the strong covalent bonds. The dissociation energy of the hydrogen bond depends upon the attraction of the shared pair of electrons, and hence on the electronegativity of the atom.
Detailed explanation-2: -Hydrogen bonds are weak because they are an ionic interaction between only partially charged molecules. In a covalent bond, orbitals between atoms overlap and the atoms effectively share the electrons. This creates a strong bond that is not easily broken.
Detailed explanation-3: -Hydrogen bonds are a special case of dipole-dipole interactions. H-bonds are the strongest intermolecular force.
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