Chapter 3: Metals and Non-metals

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Metals and Non-metals


(i) Write the electron dot structures for sodium, oxygen and magnesium.

(ii) Show the formation of Na2O and MgO by the transfer of electrons.

(iii) What are the ions present in these compounds?




(iii)- Sodium oxide (Na2O) is an ionic compound which is formed when two sodium atoms lose one electron each while the oxygen gains two electrons. So, it contains two sodium cations (Na+) and one oxide anion (O2-).

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