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FrF

Theoretically it is francium fluoride because the francium has the lowest ionization energy while fluorine has the highest electronegativtey; however, this compound would be hard to study and find in nature for francium is radioactive and very rare. Francium is the largest element found to date.

CsF

Cesium fluoride would be another highly polar compound for the same reasons as francium fluoride.

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14y ago

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