Question

· Explain, using ideas about structure, why methane and silicon dioxide have different melting
points.[2]​

Answer 1

Answer:

Silicon has a very high melting point due to its giant covalent structure; a lot of energy is needed to break the strong covalent bonds throughout the structure. ... Argon exists as individual atoms with weak van der Waals' forces between them, which again results in a low melting temperature.

Explanation:

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