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
Ans. Magnesium
(b) Write the electronic configuration
Ans. 2, 8, 2
(c) Write the balanced equation when it burns in the presence of air
Ans. 2 Mg + O2 → 2 MgO
(d) Write a balanced equation when this oxide is dissolved in water
Ans. MgO + H2O → Mg(OH)2
(e) Draw the electron dot structure for the formation of this oxide
Ans. Electron dot structure for the formation of magnesium oxide.
