Question

a) why are ionic compound usually hard?
b)How is it that ionic compound in the solid state do not conduct electricity but they do so when in molten state?
c) what type of chemical bonds are present in CCl4​

Answer 1

1. The ionic compounds are usually hard because the ions are held by strong force of attraction as the positive and negative ions are strongly attracted to each other and difficult to separate
2. In ionic compounds, electricity is conducted by ions. In solid state, ions are held together by strong electrostatic forces and are not free to move about within the solid. Hence, in molten state or in solution form, the ions are free to move and can conduct electricity.
3. Covalent bond ....... Extra Info 4 covalent bonds are present in carbon tetrachloride (ccl4)

Answer 2

Answer:

a) The ionic compounds are usually hard because the ions are held by strong electrostatic force of attraction as the positive and negative

ions are strongly attracted to each other and difficult to separate them apart.

b) The ionic compounds in solid state are bonded with strong intermolecular forces and are not free to move. Therefore, they cannot conduct electricity. However, when this salt melts, its constituent ions are separated from each other and become free to move across the melted salt that can conduct electricity.

c) Properties. In the carbon tetrachloride molecule, four chlorine atoms are positioned symmetrically as corners in a tetrahedral configuration joined to a central carbon atom by single covalent bonds. Because of this symmetric geometry, CCl4 is non-polar.

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