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Your answer is C

Explanation:

It takes a lot of energy to overcome the strong electrostatic forces of attraction between oppositely charged ions, so ionic compounds have high melting and boiling points. ... Magnesium oxide is made from ions with two charges (Mg 2+ and O 2-) and so has a much higher melting point of 2852°C.

it is an ionic compound

Explanation:

made from ions of two charges Mg 2+ and O 2- thus has a melting point of 2852 degree celsius

your answers are a,b,,e and f

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the answer to your question is c.

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