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Question:

Why is Aluminiums boiling point much higher than that of magnesium?

I know that Al unlike Mg has one electron in its 3p subshell so why would this increase its boiling point? Thanks!

Answer:

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1c 2a 3b 4c 5b 6b 7a 8b 9a 10c 11d 12b 13c 14c 15b 16d 17d 18A - Bulimia
Having 3 electrons in the 3p subshell increases the charge present on the Al atom significantly but also cause the atom to have a much smaller radiusThese result in an unusually large charge density, which accounts for the unusual boiling pointThe boiling point is higher than that of magnesium because the charge-radius ratio of Mg2+ is 31 while that of Al3+ is 63.

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