Sarthaks Test
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(a) Write the electron dot structures of sodium, oxygen and magnesium. 

(b) Show the formation of Na2O and MgO by transfer of electrons. Name the ions present in these compound. 

(c) List three properties of ionic compounds.

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Na2O contains Na+ and O2+ ions.

MgO contains Mg2+ and O2- ions

(i) They are solids having high melting point. 

(ii) They are soluble in water. 

(iii) They conduct electricity in molten state as well as in aqueous solution

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