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Does a Water Molecule Become More or Less Polar When

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Does a water molecule become more or less polar when bound to a metal ion, such as Does a water molecule become more or less polar when bound to a metal ion, such as   ? Why? (Hint: How might the electrons of the O-H covalent bonds in water  feel  about the highly charged aluminum ion?)  A) Less polar. Aluminum ion is so highly polar that it attracts the electrons in a water molecule to itself and away from the oxygen atom in water, causing water to lose polar character. B) More polar. The electrons in the O-H bond are drawn even closer to the oxygen (and away from the hydrogen) as they are drawn towards the positive charge of the aluminum ion. C) Neither. Although polarity may increase as a water molecule approaches an aluminum ion, once the water molecule becomes bound to the metal ion its polarity reverts to its original status. D) Both. As a first water molecule approaches   , there is an increase in water's polarity. However, the  bond  becomes less polar when the aluminum ion has captured all six water molecules to form   O   <sup>3+</sup>. ? Why? (Hint: How might the electrons of the O-H covalent bonds in water "feel" about the highly charged aluminum ion?)


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