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CHEMICAL BOND
It is a strong force of attraction, which holds together the atoms in a molecule or crystal. A chemical bond usually has energies of the order of 1000 kj/Mol. A chemical bond may be formed, because of two reasons;

To complete the octet of the […]

Physical chemistry
The branch of chemistry that deals with the science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems and the composition, structure, properties, and reactions of a substance.