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Explain why the melting temperature of magnesium (650 °C) is much higher than that of sodium (98 °C).

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Answer:

.Magnesium has a higher melting point because magnesium ions are Mg2+ and sodium is Na+. Magnesium ions have a stronger positive charge so the attraction to the delocalised electrons is stronger. There are also more delocalised electrons in magnesium than there is in sodium

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