BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The polarity of a bond is determined by ____
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The sum of the electronegativities of the two atoms
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The difference in the electronegativities of the two atoms
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The charges of the atoms
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None of the Above
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Explanation:
Detailed explanation-1: -The difference in electronegativity between two atoms determines how polar a bond will be. In a diatomic molecule with two identical atoms, there is no difference in electronegativity, so the bond is nonpolar or pure covalent.
Detailed explanation-2: -The polarity of a bond depends on the electronegativities of the bonded atoms. Large differences between the electronegativities of the bonded atoms increase the polarity of bonds.
Detailed explanation-3: -One way of estimating the ionic character of a bond-that is, the magnitude of the charge separation in a polar covalent bond-is to calculate the difference in electronegativity between the two atoms:
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