Definition - What does Electron mean?
An electron is the lightest stable subatomic particle, with mass of 9.2095 × 10-31 kg. They have a negative charge, and the charge of an electron is considered the basic unit of electric charge: -1.602177 × 10-19 C. An electron cannot be broken into smaller particles.
Corrosionpedia explains Electron
An electrochemical reaction involves the transfer or exchange of electrons. In corrosion, there are two chemical processes involved: oxidation and reduction. Oxidation is the process in which an element loses electrons and valence of the element correspondingly increases. Reduction, on the other hand, is the reaction in which the positive valence decreases by gaining electrons.
Therefore, for corrosion to occur, there must be a formation of ions and release of electrons at an anodic surface where oxidation or deterioration of the metal occurs. Neutralization takes place with simultaneous acceptance of electrons at the cathodic surface.