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It is about in between ionic and polar bond in CaI2.

Almost every, but not all, metals bonding to non-metals bond ionic, but if the difference of electronegativity (E.N.) is smaller than 1.2 than it tends to polar.

So CaCl2 is ionic (diff.E.N. 1.79) and CaI2 is somewhat polar (diff.E.N. 1.17)

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14y ago

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