BIOCHEMISTRY
POLAR AND NONPOLAR MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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even distribution and polar
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uneven distribution and nonpolar
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uneven distribution and polar
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even distribution and nonpolar
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Detailed explanation-1: -Ammonia is a polar molecule because it has a positive charge on one end and a negative charge on the other. This makes it polar because the positive and negative charges are not evenly distributed. The reason ammonia (NH3) is a polar molecule is due to its uneven distribution of charges.
Detailed explanation-2: -NF3 is polar in nature due to the presence of lone pair on nitrogen atom causing a distorted shape of NF3 molecule and the difference between the electronegativity of fluorine(3.98) and nitrogen(3.04) causes polarity in N-F bonds and result in a non zero dipole moment of the entire molecule.
Detailed explanation-3: -Polarity results from the uneven partial charge distribution between various atoms in a compound. Atoms, such as nitrogen, oxygen, and halogens, that are more electronegative have a tendency to have partial negative charges.
Detailed explanation-4: -Both BF3 and NF3 are covalent compounds. BF3 is non polar while NF3 is polar.