Polarisation power of cations

In summary, the polarisation power of cations refers to their ability to distort the electron clouds of neighboring anions, caused by the strong electrostatic attraction between the positively charged cation and the negatively charged anion. This power greatly influences the physical and chemical properties of a compound, such as ionic bond strength, solubility, and conductivity. It is influenced by factors such as cation size, charge, and arrangement of surrounding anions, with smaller and more highly charged cations having a greater polarisation power. As the ionic radius of a cation decreases, its polarisation power increases. This can be measured through various experimental techniques, such as X-ray diffraction, infrared spectroscopy, and Raman spectroscopy.
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Shafia Zahin
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Why the cations having electronic structure of ns2 np6 nd10 have more polarisation power on anions than the cations having electronic structure of ns2 np6?
 
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Probably because they are smaller.
 
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Shafia Zahin said:
Why the cations having electronic structure of ns2 np6 nd10 have more polarisation power on anions than the cations having electronic structure of ns2 np6?
This due to the cations which have elctronic configuration ns2 np6 nd10 has a poor shileding effect on outer electrons hence effective nuclear attraction increase. The cations which have configuration ns2 np6 have a greater shielding effect so they have less nuclear attraction
 
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What is the polarisation power of cations?

The polarisation power of cations refers to their ability to distort the electron clouds of neighboring anions. This distortion is caused by the strong electrostatic attraction between the positively charged cation and the negatively charged anion.

How does the polarisation power of cations affect the properties of a compound?

The polarisation power of cations can greatly influence the physical and chemical properties of a compound. It can affect the strength of ionic bonds, the solubility of compounds, and the conductivity of solutions.

Which factors influence the polarisation power of cations?

The polarisation power of cations is influenced by several factors, including the size of the cation, its charge, and the arrangement of the surrounding anions. Generally, smaller and more highly charged cations have a greater polarisation power.

What is the relationship between polarisation power and ionic radius?

As the ionic radius of a cation decreases, its polarisation power increases. This is because a smaller cation can pull the electron cloud of an anion closer to itself, resulting in a greater distortion.

How can the polarisation power of cations be measured?

The polarisation power of cations can be measured using various experimental techniques, such as X-ray diffraction, infrared spectroscopy, and Raman spectroscopy. These methods allow scientists to observe the changes in the electron cloud of an anion when it is near a polarising cation.

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