BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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covalent network bonds
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ionic bonds
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London forces (dispersion forces)
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hydrogen bonding interactions
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dipole-dipole attractions
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Detailed explanation-1: -Dipoles and Electrostatic Surfaces XeF4, ClF3 and CCl3Br The Xe-F bonds are all polarized but they cancel one another out so the molecule has no dipole. Chlorine trifluoride has three polarized bonds and they combine to produce a small molecular dipole along the Cl-F bond.
Detailed explanation-2: -The three major types of intermolecular interactions are dipole–dipole interactions, London dispersion forces (these two are often referred to collectively as van der Waals forces), and hydrogen bonds.
Detailed explanation-3: -The weakest intermolecular forces of all are called dispersion forces or London forces. These represent the attraction between instantaneous dipoles in a molecule.
Detailed explanation-4: -The lone pairs of the NH₃ molecule interact with partial positive hydrogen and establish an electrostatic attraction. It is a strong intermolecular force of attraction.