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Write symbols of cation and anion presen...

Write symbols of cation and anion present in MgO. Why do ionic compounds have higher melting points ?

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Cation : `Mg^(2+)`
Anion : `O^(2-)`
Ionic compounds have high melting point because cations and anions are held strong electrostatic force of attraction and considerable amount of energy is required to break the strong inter ionic forces.
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OSWAAL PUBLICATION-METALS AND NON-METALS-TOPIC - 2 Short Answer Type Questions - I
  1. What are ionic compounds ? List two properties of these compounds.

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  2. Draw the diagram of an electrolytic cell used in the purification of c...

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  3. Why do ionic compounds have high melting points ? State reason.

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  4. Define amphoteric oxides. Give two examples of such oxides.

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  5. Explain the steps for extraction of copper from its sulphide ore. Writ...

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  6. Define ionic compounds. Ionic compounds conduct electricity only in th...

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  7. Differentiate roasting and calcination process giving one example of e...

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  8. Write symbols of cation and anion present in MgO. Why do ionic compoun...

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  9. Name a metal/non-metal : (i) Which makes iron hard and strong ? (i...

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  10. A metal 'M' is found in nature as its carbonate. It is used in the gal...

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  11. Name one metal each which is extracted by : (i) Reduction with carbo...

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  12. Describe briefly the method to obtain mercury from Cinnabar. Write the...

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  14. Write chemical equations that show aluminium oxide reacts with acid as...

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  17. A metallic ore 'X' reacts with dilute HCl to liberate a gas which turn...

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