Which would you expect to have a higher melting point, magnesium oxide or magnesium fluoride? Explain your reasoning.

Which would you expect to have a higher melting point, magnesium oxide

1.	Which would you expect to have a higher melting point, magnesium oxide or magnesium fluoride? Explain your reasoning.
Answer» Solution :(i) Magnesium OXIDE has very strong ionic bonds as compared to magnesium fluoride. (ii) `Mg^(2+) and O^(2-)` have charges of +2 and -2, respectively. (iii) Oxygen ion is smaller than fluoride ion. (iv) The smaller the ionic radii, the smalller the bonds LENGTH in MGO and the bond is STRONGER than `MgF_(2)`. (V) Due to more strong bond nature in MgO, it has high melting point than `MgF_(2)`