Welcome to the database of ionic radii. The following web interface allows listing and comparison of ionic and crystal radii with different coordination and charge states.

Ionic radii are typically given in units of either picometers (pm) or angstroms (Å), with 1 Å = 100 pm. Typical values range from 31 pm (0.3 Å) to over 200 pm (2 Å). The concept can be …

What is ionic radius. Learn its trend across a period & down a group in the periodic table. Compare & contrast ionic radius vs. atomic radius with a few examples.

The ionic radii of cations and anions are always smaller or larger, respectively, than the parent atom due to changes in electron–electron repulsions, and the trends in ionic radius parallel …

Explore the element of your choice through this periodic table.

This table lists a set of ionic radii Ri in Å units for the most common coordination numbers CN of positive and negative ions. The values are based on experimental crystal structure deter …

In this tutorial, you will be introduced to ionic radius trends on the periodic table of elements. You will also be introduced to the concepts that contribute to ionic radius, including how to find it.

Feb 22, 2007 · This site offers comprehensive information for each element including: who, when & where; up to 40 properties (chemical & physical); over 3,600 nuclides (isotopes); over 4,400 …

This table lists a set of ionic radii Ri in Å units for the most common coordination numbers CN of positive and negative ions. The values are based on experimental crystal structure …

Ionic radius, rion, is the radius ascribed to an atom's ion. Although neither atoms nor ions have sharp boundaries, it is useful to treat them as if they are hard spheres with radii such that the …