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 Form 2 Chemistry questions and answers on structure and bonding

Element U has atomic number 12 while element V has atomic number 16. How do the melting points of their oxides compare? Explain.

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Answer Text:
The melting point of oxide of U is higher that of V.
This is because the oxide of U has a ionic bonds and its ions are held by strong ionic bonds unlike that of
V where molecules are held where molecules are held
by weak van der Waal’s forces.