Class 12

One of the most remarkable properties of coordination compounds is the wide range of colours shown by them. It has been a subject of great interest to chemists. Why is it that the hexaaquairon(II) complex appears red, but the hexaaquacobalt(II) complex appears pink and hexaaquanickel(II) complex green? The answer to such questions lies in the […]

Don’t miss: Unacademy Aarambh 2024 – Biggest Event for IIT JEE and NEET UG Which stream to choose after 10th? Werner, a well-known scientist, proposed his theory of coordination compounds in 1823, which describes the formation and structure of complex compounds and was later named Werner’s Theory of Coordinate Compounds. He was given the Nobel

Types of Ligands  Coordination compounds consist of a metal ion that is covalently bonded to ligands. Ligands are charged or neutral molecules or ions that can form coordination bonds with the transition metal. The word “ligand” comes from the Latin word Ligandus which means “to bind”. They donate electron pairs to the empty hybridised orbital

Coordination complexes contain metal in neutral and different oxidation states and are surrounded by the ligands through covalent coordinate bonds. The types of coordination complexes depend on various factors: Charge on the coordination sphere Type of the ligands in coordination compounds Number of the metal in the coordination sphere Ligands in coordination compounds Ligands in

To make alkyl fluorides from alkyl chlorides or alkyl bromides, the Swarts reaction is commonly used. Heating alkyl chloride/bromide in the presence of heavy metal fluoride achieves this (silver fluoride or mercurous fluoride for example). If sodium fluoride or potassium fluoride are employed, the reaction will proceed, but the yield will be much reduced. Frederic

In coordination chemistry, the molecules having the same molecular formula but different structures are called isomers, and the phenomenon is isomerism. Isomerism can be classified into two categories: Structural isomerism: Complexes with the same chemical formula but different attachment of ligands with central metal. Stereoisomerism: Complexes with the same chemical formula but different spatial arrangement

The semi-metal boron (B) and the metals aluminium (Al), gallium (Ga), indium (In), and thallium (Tl) are all members of the boron family. The boron family has two different oxidation states. One is +3 and +1, respectively. Due to the inert pair effect, heavier elements like thallium which have an oxidation state of +1, are

Coordination compounds are a class of chemical compounds in which there is a central metal atom that is bonded to several ligands simultaneously. The ligands may be anionic or neutral and are only rarely cationic. Their bonds are directional in nature, and their magnetic and optical properties are remarkable. These properties of coordination compounds can

As the name diborane suggests, in this chemical compound, two atoms of boron and six atoms of hydrogens are present. Chemically, it is written as B2H6. The IUPAC name of diborane is di – boron hexa – hydride. Some more synonyms used for diborane are boron ethane and boron hydride. Diborane is the specific compound

Predict Your JEE Main Rank Here Alfred Werner (1866-1919), a Swiss physicist, was the first to formulate the architecture of coordination compounds. He synthesised and characterised a large number of coordination molecules, then investigated their physical and chemical behaviour using basic experimental approaches. Werner proposed that a metal ion had a primary valence and a