What is Fajans theory?
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In inorganic chemistry, Fajans’ rules, formulated by Kazimierz Fajans in 1923, are used to predict whether a chemical bond will be covalent or ionic, and depend on the charge on the cation and the relative sizes of the cation and anion.
What is Fajans rule BSC 1st year?
Rule 1: The first rule speaks about the polarising power of the cation. If the cation is smaller, then we can say that the volume of the ion is less. If the volume is less, we can conclude that the charge density of the ion would be high.
What is Fajans rule Class 11?
Fajan’s rule helps to determine the percentage of covalent character in an ionic compound. An example of Fajan’s rule is depicted in comparison of LiCl and NaCl to determine the hardness of compounds.
What is Fajans give one of its use?
In the inorganic branch of chemistry, Fajans’ rule, formulated by Kazimierz Fajan in 1923, is used for the prediction purpose, whether a chemical bond will be covalent or ionic. It depends on the charge on the cation and the relative size of the cation and anion.
What are Fajans rule how do they help in deciding the covalent character in a bond?
Large cation and small anion. Hint: Fajan’s rule is a set of factors which help us classify whether a bond is covalent or ionic. It depends on the size, charge and electronic configuration of ions such as larger anion tend to have greater covalent character and opposite to cation.
What is Fajans rule with example?
For example, an aluminium atom with a+3 charge has a relatively larger positive charge. Then, this positive charge exerts an attractive force on the electron cloud of the other ion which has accepted the electrons from the aluminum positive ion.
What is fajans rule of polarization?
Fajan’s rule is stated on the basis of the concept of polarization which states that the covalent nature of an anion increases with an increase in its polarization. The two main factors that affect the extent of polarization of an anion are the polarizing power of the cation and the polarizability of the anion.
Who gave Fajans rule?
What is Fajans’ Law? Whether a chemical bond will be converted into covalent or ionic is predicted by the Fajans’ law. Few of the ionic bonds have partial covalent characteristics which were 1st discussed in 1923 by Kazimierz Fajans.
What is Fajans rule How does it explain covalent character in an ionic compound?
Answer: According to Fajan’s Rule the covalent character in an ionic bond can be explained as , if two oppositely charged ions are brought together, the nature of the bond between them depends upon the effect of one ion on the other.