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Aluminium iodide is covalent because the electron pair is easily dragged away from the iodide ion. On the other hand, aluminium fluoride is ionic because the aluminium ion can't polarise the small fluoride ion sufficiently to form a covalent bond.

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15y ago
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15y ago

AlF3 - Ionic compound ( formula compound)

- Type I - Binary ionic compound

- Ionic charges Al (+3) and F (-1)

- EN (electronegativity) Al is 1.61

- EN (electronegativity) F is 3.98

- the difference in electronegativity is 2.37

The fluorine atom (F) is the most electronegative of all the elements, and the francium atom (Fr) is the least electronegative of all the elements.

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12y ago

ionic because it is a nonmetal and a metal

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12y ago

aluminum fluoride ionic in nature this concept explain on the basis of fazan rule

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9y ago

The chemical formula of aluminium fluoride is AlF3.
This compound is ionic.

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Q: Why is aluminum fluoride ionic and aluminum iodide is covalent?
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