1.

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

Answer»

1. Magnesium oxide has very strong ionic bonds as compared to magnesium fluoride. 

2. Mg2+ and O2- have charges of +2 and -2, respectively. 

3. Oxygen ion is smaller than fluoride ion. 

4. The smaller the ionic radii, the smaller the bond length in MgO and the bond is stronger than MgF2 .

5. Due to more strong bond nature in MgO, it has high melting point than MgF2



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