Predicting polarizability and polarizing power
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Predicting polarizability and polarizing power
How would I go about predicting the polarizability of Anions and the polarizing power of Cations? Is there a periodic trend which can be used to predict such things, or another way?
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Re: Predicting polarizability and polarizing power
Polarizability increases w atomic radius aka down a group bc their electron clouds can easily be distorted where as small highly charged cations have high polarizing power (decreases across a period)
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Re: Predicting polarizability and polarizing power
Polarizability goes inverse along with the electron affinity of elements. If an atom can be easily polarized, it can easily lose an electron, meaning it has a low electron affinity.
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Re: Predicting polarizability and polarizing power
Did he say that polarizability will be covered on the midterm?
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Re: Predicting polarizability and polarizing power
if it can easily lose an electron then there is a lower electron affinity
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Re: Predicting polarizability and polarizing power
Polarizability essentially has to do with how much charge is there and how much space does the atom have to spread the charge out. For example, a large anion like Iodide is large and can spread the charge over its volume and become polarized. Polarizing ability increase with decreasing radius and increasing charge. So, a highly charged, small cation will have a highly localized charge which will affect negatively charged species strongly.
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