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chemical bonding deals with how the electron clouds of elements can interact to form different kinds of substances. It acheive this by making use of its valence electron. "valency is the combining power of an element in a compound". The type of bond present in a substance, determines both the physical, and chemical properties of the substance. This would be explained in due course! We have different kinds of chemical bonding of which we have 2 major types- electrovalent(ionic) bond, and covalent bond. Electrovalent bonding involves the transfer of electron from one element(usually a metal of low ionization energy) to another element(usually a non-metal with high electronegativity)! Many books often say that elements loss or gain electron, simply because they want to attain the noble gas structure! This is not quite true! Things are much more complicated than this! While it is favourable for chlorine to attain the stability of a noble gas, it is very very un-favorable for a sodium atom to attain this structure! The reason why atoms lose or gain electron is because of the attraction within the crystal of negatively charged ions and positively charged ions. Examples of electrovalent compounds are; sodium chloride(Nacl), calcium chloride(cacl2) etc.: Electrovalent compounds dissolves in polar solvents(e.g water). Water weakens the crystal lattice of electrovalent compounds, causing them to dissolve in it. This is because water has a positive end which attacks the negative ions in the crystal, and a negative end which neutralizes positive ions in the crystal, thus weakening the crystal! MORE WOULD BE DISCUSS IN OUR NEXT CHAPTER. BY IRIEMI VICTOR.
 * Types of bonding
 * ELECTROVALENT BOND
 * CHARACTERISTICS OF ELECTROVALENT COMPOUNDS.
 * Electrovalent compounds conduct electricity in their molten state or in solution, owing to their ability to produce mobile ions in solvents, that can migrate towards the electrodes when current flow through them.
 * Electrovalent compound consist of aggregates and not molecules.