Structure, Bonding and Organic Chemistry

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STRUCTURE, BONDING AND ORGANICCHEMISTRY
Table of ContentsSTRUCTURE, BONDING AND ORGANIC CHEMISTRY.........................................................1REFERENCES..............................................................................................................................18
Answer all the following questions1.Calcium (Ca), chlorine (Cl2) and calcium chloride (MgF2) have different types ofbonding and different properties.(a)Calcium has metallic bonding.(i)Draw a diagram to show what is meant bymetallicbonding. Label thediagram.Use your diagram to explain how calcium conducts electricity.Ans. Metallic bonding takes place for the formation of organized lattice structures.From the above illustration, it can be clearly demonstrated that calcium is ametal of atomic number 20, it has extra 2 valence electrons in the outermost cellthat are mobile and are free to move in the lattice. It has a non-directional bondand is formed due to the inter-facial attraction of these Ca free electrons withthe kernels to bind and form a bond called as metallic bond. Henceforth, thesemobile electrons are the promoter of electrical conductivity. In presence ofpotential difference on the metal sheet, the free electrons move towards positiveelectrode and later it gets replaced from negative electrode on simultaneousconditions.Illustration1: Metallic Bonding(Source:Metallic Bonding,2012)
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