This article picks up from Non-Linear Optimization using Extensions to LP and continues an exploration of what can be achieved using extensions to Linear Programming.
An anion is an ionic species having a negative charge. They are atoms that have gained electrons. Anions are one of the two types of ions. The other type is called a cation. Anions are attracted to the anode, while cations are attracted to the cathode. The concept of an anion is important in the corrosion industry because certain anions facilitate corrosion.
A negatively charged ion that is attracted to an anode (positively-charged electrode), in electrolysis. Anions are usually shown as the second group in simple inorganic molecules, thus Cl- is the anion when common salt (NaCl) is dissociated in solution. Na+ is the CATION.