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22/11/2020 5:13 pm
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An element is placed in 2nd Group and 3rd Period of the Periodic Table, burns in presence of oxygen to form a basic oxide,
(a) Identify the element.
(b) Write the electronic configuration.
(c) Write the balanced equation when it burns in the presence of air.
(d) Write a balanced equation when this oxide is dissolved in water.
(e) Draw the electron dot structure for the formation of this oxide.
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22/11/2020 5:18 pm
(a) Magnesium
(b) Electronic configuration is 2, 8, 2
(c) 2Mg + O2 → 2MgO
(d) MgO + H2O → Mg(OH)2