MgO Magnesium Oxide is classified as an ionic inorganic solid. The reasoning behind this classification is based on the nature of the bonding between the magnesium and oxygen atoms in the compound.Magnesium Mg is an alkaline earth metal found in Group 2 of the periodic table, while oxygen O is a non-metal found in Group 16. When these two elements combine, they form an ionic bond due to the difference in their electronegativity values. Magnesium has an electronegativity value of 1.31, while oxygen has an electronegativity value of 3.44. The difference in electronegativity values 3.44 - 1.31 = 2.13 is greater than 1.7, which is a general threshold for determining ionic character in a bond.In an ionic bond, one or more electrons are transferred from the metal atom in this case, magnesium to the non-metal atom oxygen . Magnesium loses two electrons to achieve a stable electron configuration, forming a Mg2+ ion, while oxygen gains two electrons to achieve a stable electron configuration, forming an O2- ion. These oppositely charged ions are attracted to each other, forming an ionic bond and creating the ionic compound MgO.Ionic solids, like MgO, typically have high melting and boiling points due to the strong electrostatic forces between the positively and negatively charged ions. They also tend to be brittle and can conduct electricity when dissolved in water or melted, as the ions are free to move and carry an electric charge.In summary, MgO Magnesium Oxide is classified as an ionic inorganic solid due to the ionic bond formed between the magnesium and oxygen atoms, resulting from the transfer of electrons and the difference in their electronegativity values.