Which among the following is least covalent i | vedclass

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Question

(B) According to Fajan's rule,the covalent character of an ionic bond depends on the polarising power of the cation and the polarisability of the anio

Vedclass · Accepted Answer

$BiF_3$

Vedclass · Answer

(B) According to Fajan's rule,the covalent character of an ionic bond depends on the polarising power of the cation and the polarisability of the anion.Smaller cations have higher polarising power,leading to greater covalent character.In the given group $15$ trihalides,the size of the central metal cation increases down the group $(N Since $Bi^{3+}$ is the largest cation among the given options,it has the lowest polarising power.Therefore,$BiF_3$ exhibits the least covalent character and is the most ionic in nature.

Which among the following is least covalent in nature?

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