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Potassium is K1+, and Iodine is I1-. As a result, Potassium iodide is made. It's ionic becuase Potassium has a positive charge, so it needs one more electron to have its orbitals filled. Iodine on the other hand, has an electron that isn't needed. If Iodine can give up its electron, then all of its orbitals will be filled. As a result, iodine gives it's extra electron to the potassium, and they both have filled orbitals. When an electron is being given and accepted, that's called an ionic bond. So Potassium iodide is ionic.

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12y ago
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7y ago

Potassium is a metal with a very low electronegativity. Fluorine is a nonmetal with a very high electrognegativity. As a result the fluorine will easily pull away potassium's valence electron.

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13y ago

KI is an ionic lattice, only some non-metal elements and compounds are molecular

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12y ago

Ionic

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Q: Is potassium iodide ionic or molecular?
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