What are the Fajans Rules of polarization and polarizability?
Fajan’s rule definition in chemistry . The higher the degree of ionic polarization , the greater is the stability of the polar covalent bond . The extent of polarization depends , evidently, on the polarizing power of the cation and the polarizability of the anion.
What is polarization in Fajans rule?
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. Since the charge density is high, the polarising power of the ion would be high.
What is Fajans rule explain with example?
The size of the charge in an ionic bond depends on the number of electrons transferred. For example, an aluminium atom with a+3 charge has a relatively larger positive charge. Whether a chemical bond will be converted into covalent or ionic is predicted by the Fajans’ law.
What are Fajans rule explain with reasons?
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 Class 11 chemistry?
The rule says that for cations with same charge and size, the cation with electronic configuration (n−1)dnns0which is found in transition elements have greater covalent character than the cation with electronic configuration ns2np6 which is found in alkali or alkali earth metals.
What are the rules discussed in fajans rule which describes the partial covalent character in 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.
Which of the following can be explained by fajans rule?
Fajan’s rules in inorganic chemistry are the set of rules which tell whether a bond is ionic or covalent. All this prediction is made based on the size of the cations and the anions that participate in the bonding process. While high positive charge with small cation and large anion will make up a covalent bond.
What is fajans rule Class 12?
What are Fajan rule how do they help in deciding covalent character in 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.
How is Fajans rule used in Inorganic Chemistry?
Fajans’ rule in inorganic chemistry, formulated by Kazimierz Fajan in 1923, is used to predict whether a chemical bond will be covalent or ionic. This depends on the charge and the size of the cations and anions.
What are the three factors of Fajans rule?
The rule can be stated on the basis of 3 factors, which are: Size of the ion: Smaller the size of cation, the larger the size of the anion, greater is the covalent character of the ionic bond. The charge of Cation: Greater the charge of cation, greater is the covalent character of the ionic bond.
What did Kazimierz Fajans predict about chemical bonds?
Fajan’s rule. Fajans’ rule predicts whether a chemical bond will be covalent or ionic. A few ionic bonds have partial covalent characteristics which were first discussed by Kazimierz Fajans in 1923. At that time with the help of X-ray crystallography, he was able to predict ionic or covalent bonding with the attributes like ionic and atomic radius.
Which is predicted by the Fajans’s 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.