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12) What do you mean by a polar molecule and a nonpolar molecule? Give one example of each. |
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Answer» A polar bond is one which is formed between atoms when their is a difference in their electronegativity i.e is the atom which is less electronegative acquires partial positive charge and the other acquires partial negative charge. A typical example is a water molecule. Examples of polar molecules Examples of polar molecules of materials that are gases under standard conditions are: Ammonia (NH3)Sulfur Dioxide (SO2)Hydrogen Sulfide (H2S). Also, Ethanol is polar, since its oxygen molecule draws electrons towards it due to its high electro-negativity, causing a negative charge around itself. Non-polar molecules A non-polar molecule is one in which the electrons are distributed more symmetrically and thus does not have an abundance of charges at the opposite sides. The charges all cancel out each other. Examples of non-polar liquids Most hydrocarbon liquids are non-polar molecules. Examples include: TolueneGasoline |
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