Definition of Nephelauxetic   effect. Electrons in the partly filled d-orbitals of a metal ion repel one another and give rise  t...

What is electro cyclic reaction ? Electro cyclic reactions  are those in which rings are formed from a cyclic poly ene at the expens...

Definition of pericyclic reaction ? A  pericyclic reaction  is one involving a concerted bond reorganization in which the essential...

What is kinetically controlled reaction ? When a chemical reaction gives rise to alternative products, the proportion of different pr...

What is mescaline? 3, 4, 5-trimethoxy phenethyl amine is known as  mescaline .  Mescaline  is a naturally occurring psychedelic alka...

Definition of Amadori  rearrangement Amadori   rearrangement is a very important mechanism in carbohydrate chemistry for the formation...

What is stereo specific reaction ? A reaction may be stereo specific , if stereo chemically different materials give stereo chemically...

Huckel’s rule of aromaticity   Huckel’s stated that the presence of (4n+2) numbers   of delocalized π electrons in a flat or nearly fl...

How electronegativity depends on oxidation number,hybridization and other factors? Although the electronegativity of an element is c...

What is electronegativity ? The tendency or power of an atom to attract electrons towards itself, when combined in a covalent compound...

Why   phenol is stronger acid than aliphatic alcohol ? With aliphatic alcohols there is no factor stabilizing group which stabilize t...