Answer: The chemical formula for the ionic compound formed will be [tex]MgO[/tex]
Explanation:
Magnesium is the 12th element of the periodic table having electronic configuration of [tex][Ne]3s^{2}[/tex]
This element will loose 2 electrons and thus shows an oxidation state of +2 units.
Oxygen is the 8th element of the periodic table having electronic configuration of [tex][He]2s^22p^4[/tex]
This element requires 2 electrons and thus shows an oxidation state of -2 units.
By criss-cross method, the oxidation state of the ions gets exchanged and hence, they form the subscripts of the opposite ion. This results in the formation of a neutral compound.
Thus, the chemical formula for the ionic compound will be [tex]MgO[/tex]
