All known elements do not exist in free nature due to their reactivity with various reagents. Only few elements which placed in last group of periodic table has completely filled octet configuration and also termed as noble gases. All other elements have tendency to attain octet configuration by fo..

What is a chemical bond ? Although there are several possible ways to answer this question we will define a bond as a force that holds groups of two pr more atoms together and makes them function as a unit. The chemical bond is defined as A ..

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Of all the concepts used in chemistry, that of the chemical bond is one of the most useful and at the same time one of the most difficult. It is useful because it helps us to understand the structures of compounds and their properties, and it is difficult because it is not easy to re..

All elements want to attain stability and for getting this, they can react with other atoms or molecule to form new compounds. The formation of molecules or compounds proves that they are more stable than corresponding atoms and there is a lowering in energy during the formation of molecule or com..

G.N Lewis was first to suggest that atoms can be combine with one another by sharing of electrons in their valence shell so that the combining atoms attain the nearest noble gas configuration. This type of linkage is called as covalent linkage or covalent bond and the compound involve i..

The history of chemical bonding began in the eighteenth century. Until then, the only explanations found in literature were based on the old theories of: Thales of Miletus. (Sixth century B.C) -All substances originates from water (Later this idea was reviewed by Newton) Democritus (..

Chemical Bonding is the kind of force that holds the atoms or ions together to form a molecule. There are three types of models of chemical bonding. Classical Model Polar Covalent Model Quantum Mechanical Model The bond formation ..

A cell, a tissue or an organ, which secretes certain useful chemical compounds required for a particular function, is called a Glan..
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