MetallIonen
MetallIonen (literally "metal ions" in German) are atoms of metallic elements that have lost or gained electrons and therefore carry a net electrical charge. In most chemical contexts the term denotes positively charged cations formed by loss of electrons, such as Na+, Ca2+ or Fe3+, though metal-containing anionic complexes also occur. Metal ions are characterized by their charge, ionic radius and electronic configuration, which determine chemical reactivity and coordination preferences.
Formation of metal ions occurs by ionization, redox reactions or dissolution of metal compounds; in solution
Metal ions play essential roles in biology as enzyme cofactors (e.g., Mg2+, Zn2+, Fe2+/3+), in materials and
Analytical techniques for detecting and quantifying metal ions include atomic absorption spectroscopy, inductively coupled plasma mass