Develop and improve products. List of Partners vendors. Share Flipboard Email. Anne Marie Helmenstine, Ph. Chemistry Expert. Helmenstine holds a Ph. She has taught science courses at the high school, college, and graduate levels.
Facebook Facebook Twitter Twitter. Featured Video. Cite this Article Format. How to Control Corrosion by Improving Design. Why is Stainless Steel Corrosion Resistant? An Introduction to Hydrogen Embrittlement. An Intro to Pipeline Corrosion in Seawater.
Follow Connect with us. Sign up. Thank you for subscribing to our newsletter! Connect with us. What Does Cation Mean? Corrosionpedia Explains Cation In an atom or molecule, if the number of electrons is equal to the total number of protons, the atom is said to be neutral.
A cation has more protons than electrons, consequently giving it a net positive charge. For a cation to form, one or more electrons must be lost, typically pulled away by atoms with a stronger affinity for them. The number of electrons lost, and so the charge of the ion, is indicated after the chemical symbol, e.
An anion has more electrons than protons, consequently giving it a net negative charge. For an anion to form, one or more electrons must be gained, typically pulled away from other atoms with a weaker affinity for them.
The number of electrons gained, and so the charge of the ion, is indicated after the chemical symbol, e. The main differences between cations and anions are summarized in the table below. It can be possible to predict whether an atom will form a cation or an anion based on its position on the periodic table.
Words nearby cation catholicus , cathouse , Cathy , Catilinarian , Catiline , cation , cation exchange , cation-exchange resin , cationic detergent , catkin , catlike. Bobby in Search of a Birthday Lebbeus Mitchell. An ion or group of ions having a positive charge and characteristically moving toward the negative electrode in electrolysis. Published by Houghton Mifflin Company.
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