The electronegativities for the elements vary from 0.7 for cesium to 4.0 for flu

Question

The electronegativities for the elements vary from 0.7 for cesium to 4.0 for fluorine. The electronegativity for iodine is 2.5. Based entirely on the general guidelines for electronegativities and bond character, binary compounds with iodine should all be polar covalent with a delta- on I. binary compounds with iodine should all polar covalent with a delta+ on I Compounds with iodine may be ionic, polar covalent, or nonpolar covalent. No binary compounds with iodine should be substantially ionic.

Explanation / Answer

Now, Iodine has an electronegativity 2.5.

So, there would be only a few element where there is electronegativity difference more than 1.7.

Hence, no binary compounds with iodine should be substantially ionic.

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