A cation refers to an atom or a group of atoms that bear one or multiple positive electric charges. An anion refers to an atom or a group of atoms that bear one or multiple negative electric charges.

These studies revealed geometric preferences of some oxygen and sulfur containing entities around a nitrate anion that are consistent with an interaction between the Lewis acidic site on N and the ...

All chemists are familiar with the litmus test. Like other acid-base indicators, litmus changes color when the pH of a solution changes. The indicator is an example of a "naked-eye" colorimetric ion ...