An element is placed in `2^("nd")` group and `3^("rd")` period of the periodic table, burns is presence of xygen of form a basic oxide
(a) Identify the element
(b) Write the electronic configuration
(c) Write a balanced equation when it burns in the presence of air
(d) Write a balanced when this oxide is dissolved in water
(e) Draw the electron dot structure for the formation of this oxide.

Explanation

(a) The element is magnesium (Mg). (b) The electronic configuration is 2, 8, 2.
(c) Magnesium burns in oxygen (air) to form magnesium oxide which is of basic nature.
`2Mg(s)+O_(2)(g)rarr2MgO(s)`
(d) Magnesium hydroxide is formed.
`MgO(s)+H_(2)O(aq)rarrMg(OH)_(2)(s)`
(e)