Q15 of 400 Page 167

State one major difference between covalent and ionic bonds and give one example each of covalent and ionic compounds.

One major difference between covalent and ionic bonds is, ionic compound conduct electricity when dissolved in water or melted on the other hand covalent compound do not conduct electricity. the example of ionic compound is NaCl whereas the example of covalent compound is CO2.

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13 What type of bonds are present in water molecule? Draw the electron- dot structure of water (H2O). 14 What type of Bonds are present in methane (C) and sodium chloride (NaCl)? 17 Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble ? What is this electron configuration? 18 Which of the following compounds are ionic and which are covalent?

Urea, Cane sugar, Hydrogen chloride, Sodium chloride, Ammonium chloride, Carbon tetrachloride, Ammonia, Alcohol, Magnesium chloride.