BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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it is asymmetrical with at least one polar bond
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it is symmetrical
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it is asymmetrical
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it is symmetrical with at least one polar bond
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Detailed explanation-1: -Polar molecules are asymmetric, either containing lone pairs of electrons on a central atom or having atoms with different electronegativities bonded.
Detailed explanation-2: -If the arrangement is symmetrical and the arrows are of equal length, the molecule is nonpolar. If the arrows are of different lengths, and if they do not balance each other, the molecule is polar. If the arrangement is asymmetrical, the molecule is polar.
Detailed explanation-3: -A polar molecule always contains polar bonds, but some molecules with polar bonds are nonpolar.
Detailed explanation-4: -Symmetry and Asymmetry Polar covalent molecules exist whenever there is an asymmetry, or uneven distribution of electrons in a molecule. One or more of these asymmetric atoms pulls electrons more strongly than the other atoms.
Detailed explanation-5: -A polar molecule results when a molecule contains polar bonds in an unsymmetrical arrangement. Nonpolar molecules are of two types.