Clearly, the double charge of each constituent ion in MgO strengthens the electrostatic interaction. Why does the compound magnesium oxide has a high melting point? Chemistry Bonding Basics Bonding. Dec 30, Explanation: MgO is a non-molecular, ionic solid.
Related questions What is the Lennard-Jones potential? Why do elements share electrons? What do you notice about their shape? What happens to the water so that this salt is left? Sodium chloride and magnesium oxide do not conduct electricity when they are solids. The electric current cannot pass through because the ions are not able to move. Sodium chloride can dissolve in water though. When it is dissolved in water it makes a solution. Sodium chloride solution can conduct electricity.
Two electrodes are put into the solution to allow the electricity to pass through. Sodium chloride and magnesium oxide have high melting points, but they do become molten at much lower temperatures. They become molten substances. If two electrodes are put into the molten liquids both will conduct electricity. The structure of sodium chloride or magnesium oxide is a giant ionic lattice , in which positive ions have strong electrostatic attraction to negative ions.
Which gas is formed at the anode? FIGURE 9: There is a strong attraction between positive and negative ions of sodium chloride, forming a giant lattice. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Why is the melting point of magnesium oxide higher than aluminium oxide? Ask Question. Asked 4 years, 7 months ago. Active 11 months ago.
Viewed 13k times. Improve this question. Michael Harding Michael Harding 1 1 gold badge 2 2 silver badges 9 9 bronze badges. Add a comment. Active Oldest Votes. Reference 1. Improve this answer. Oscar Lanzi Oscar Lanzi I would expect a greater covalent charecter to increase the melting point.
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