Tuesday, April 28, 2015

Formation Of Ionic Bond

                   Usually metals have low ionization energy, so that metals (Na) release some of their electrons to attain a stable configuration. Now the atoms becomes cations. Some of the non-metals (Cl) electron affinity is positive, so that non-metals accept the electron to attain a stable configuration. Anions are formed.

Example :
Na   +   Cl      Na+   +   Cl-

Na+   +   Cl-      NaCl
     A piece of sodium metal atom react with chlorine gas a vigorous reaction takes place, it will give sodium chloride a common table salt.

Key Point :
         Electron transfer from metal to non-metal atom.
                       Sodium atom transfer an electron to the chlorine atom the ions attract each other to form Na+ and Cl- ions. The lose of electrons from the sodium atom into a positively charged Na+ ions. ( cations ). The gain of electrons from the chlorine atom into a negatively charged Cl- ions. (Anions ). The cations and anions combine to form NaCl.

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