Chemistry - Complete s-block Question with Solution | TestHub
The trends in properties of alkaline earth metal salts can be explained by using Fajan's rule. It is associated with incorporation of covalent character in ionic bond. It states that smaller cations form more covalent compound and ionic character explains the solubility, thermal stability hydrolysis and other properties of these salts. Some exceptions are also there and are explained by change in lattice energy.
Correct order of increasing thermal stability of alkaline earth metal sulphates is
Correct order of increasing thermal stability of alkaline earth metal sulphates is -
Options:
Answer:
Solution:
Thermal stability of alkaline earth metal sulfates increases down the group. This is due to the increasing ionic character and decreasing polarizing power of the metal cation, leading to stronger electrostatic forces and higher lattice energy, making the sulfate harder to decompose.
Therefore, the order of increasing thermal stability is: