BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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polarity of bonds and symmetry of the molecule.
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number of electrons and number of bonds.
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polarity of bonds only.
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total charge of each ion and number of multiple bonds.
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Detailed explanation-1: -A polar molecule is a molecule in which one end of the molecule is slightly positive, while the other end is slightly negative. A diatomic molecule that consists of a polar covalent bond, such as HF, is a polar molecule.
Detailed explanation-2: -To determine the molecule whether is polar or non-polar, all covalent bonds which are polar in nature should be represented by pointing arrows toward a more electronegative atom. By varying the lengths of the arrows, the relative polarities can be represented.
Detailed explanation-3: -The polarity of a covalent bond can be judged by determining the difference in the electronegativities of the two atoms making the bond. The greater the difference in electronegativities, the greater the imbalance of electron sharing in the bond.
Detailed explanation-4: -The polarity of a molecule is determined by the electronegativity difference between the atoms in a bond. If the electronegativity difference between the atoms is more than 0.4, then the molecule is polar. Polar molecules are asymmetrical and have lone pair of electrons.