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What Is an Ionic Radius? Definition and Trends

What Is an Ionic Radius? Definition and Trends: Ionic radius is half the distance between the nuclei of two ions that are just touching each other.

This shows some of the elements Ionic radius. Potassium is K. The Ionic radius is 133.

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Mercury has 34 isotopes and the most common isotope is 202 Hg. The ionic radius of Mercury is 110 (+2e) 127 (+1e). It's electronegativity is 1.9.

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