In the given problem, you need to match items from List - I with corresponding items in List - II. The correct matches have been given based on specific chemistry principles which relate to the properties, structures, and characteristics of the chemical compounds or concepts represented in each list.
After analyzing the options, the correct matching is:
Therefore, the correct answer aligns with the option (A)-(III), (B)-(II), (C)-(I), (D)-(IV), matching each item correctly based on their chemistry principles.
Werner’s coordination theory in 1893 was the first attempt to explain the bonding in coordination complexes. It must be remembered that this theory was put forward before the electron had been discovered by J.J. Thomson in 1897, and before the electronic theory of valency. Werner did not have any of the modern instrumental techniques and all his studies were made using simple experimental techniques. Werner was able to explain the nature of bonding in complexes and he concluded that in complexes, the metal shows two different sorts of valency: primary and secondary. Primary valences are normally ionisable whereas secondary valences are non-ionisable.
The largest $ n \in \mathbb{N} $ such that $ 3^n $ divides 50! is:
The term independent of $ x $ in the expansion of $$ \left( \frac{x + 1}{x^{3/2} + 1 - \sqrt{x}} \cdot \frac{x + 1}{x - \sqrt{x}} \right)^{10} $$ for $ x>1 $ is: