Question

between Agcl and AgI which one is ionic character and why?​

Answer 1

Hey there!!

Acc. to Fajan’s rule-

-smaller cations are more polarising,and

- larger anions are more polarisable.

Here, since cation is same therefore anion is the deciding factor..

I->Cl- ( size)

Hence AgI would be covalent wrt AgCl due to more polarisabilty of anion..

Hope it helps..:))

Answer 2

Comment on  ionic character of AgCl and AgI

Explanation:

Siver is a element with symbol Ag .

It combines with halogen to form halides that is :AgCl,AgBr, AgI etc

In AgI , there is a large size of iodine which can cause more polarization therefore it has more covalent character ,

In AgCl , Cl has comparatively small size therefore show less polarizing character hence it is less covalent character and more ionic character .

This can be explained on the bases of "polarization ".

We know that polarization is defined as " Distortion of electron cloud of the negatively charged ion by the positively charged ion is called Polarization.

The Extent of polarization: Is given by Fazan rule  

According to Fazan,

• Smaller the size of ion, more it can distort the electron cloud of other. Hence, more is the polarization.

•  Larger the size of anion ,more easily it gets distorted.  

• More is the magnitude of charge: More is the covalent character.