Answer
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Hint: Hydrogen bonding interaction involves a hydrogen atom located between a pair of other atoms having a high affinity for electrons.
Complete step by step answer:
-The above reason is due to the ability to form extensive intermolecular H-bonding.
-This is because of the small size and high electronegativity of elements, have the ability to form extensive intermolecular (i.e. between two molecules) hydrogen bonding
-Thus, a large amount of energy is required to break these bonds i.e. the melting and boiling points of hydrides of these elements are abnormally high.
-The interaction between molecules is much stronger when there are intermolecular hydrogen bonds because the bonds are formed between molecules.
-Further, the strength of hydrogen bond depends upon the coulombic interactions between the electronegativity of the attached atom and hydrogen.
-It is a special type of dipole-dipole attraction between molecules.
Intermolecular hydrogen bonding is as shown:
Hence, option B is correct.
Note:
Dipole- dipole interactions are the strongest intermolecular interactions and the ionic bond is the weakest of the true chemical bonds that bind atoms to atoms.
Complete step by step answer:
-The above reason is due to the ability to form extensive intermolecular H-bonding.
-This is because of the small size and high electronegativity of elements, have the ability to form extensive intermolecular (i.e. between two molecules) hydrogen bonding
-Thus, a large amount of energy is required to break these bonds i.e. the melting and boiling points of hydrides of these elements are abnormally high.
-The interaction between molecules is much stronger when there are intermolecular hydrogen bonds because the bonds are formed between molecules.
-Further, the strength of hydrogen bond depends upon the coulombic interactions between the electronegativity of the attached atom and hydrogen.
-It is a special type of dipole-dipole attraction between molecules.
Intermolecular hydrogen bonding is as shown:
Hence, option B is correct.
Note:
Dipole- dipole interactions are the strongest intermolecular interactions and the ionic bond is the weakest of the true chemical bonds that bind atoms to atoms.
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