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

Explanation

(i) Magnesium oxide has very strong ionic bonds as compared to magnesium fluoride.lt
(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 smaller the bond 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)`