Students enrolled in Dr. Draganjac's Introduction to Chemistry (CHEM1003), General Chemistry I (CHEM1013) and General Chemistry II (CHEM1023) classes are responsible for learning the names and formulae for the common acids and common reagents and for learning the names, formulae and the charges for the common cations and anions listed below: Show
Common Cations: (ions grouped by charge) NameFormulaOther name(s)AluminumAl+3AmmoniumNH4+BariumBa+2CalciumCa+2Chromium(II)Cr+2ChromousChromium(III)Cr+3ChromicCopper(I)Cu+CuprousCopper(II)Cu+2CupricIron(II)Fe+2FerrousIron(III)Fe+3FerricHydrogenH+HydroniumH3O+Lead(II)Pb+2LithiumLi+MagnesiumMg+2Manganese(II)Mn+2ManganousManganese(III)Mn+3ManganicMercury(I)Hg2+2MercurousMercury(II)Hg+2MercuricNitroniumNO2+PotassiumK+SilverAg+SodiumNa+StrontiumSr+2Tin(II)Sn+2StannousTin(IV)Sn+4StannicZincZn+2topCommon Anions: (ions grouped by charge) (anions grouped by periodic position)Simple ions:HydrideH-OxideO2-FluorideF-SulfideS2-ChlorideCl-NitrideN3-BromideBr-IodideI-Oxoanions:ArsenateAsO43-PhosphatePO43-ArseniteAsO33-Hydrogen phosphateHPO42-Dihydrogen phosphateH2PO4-SulfateSO42-NitrateNO3-Hydrogen sulfateHSO4-NitriteNO2-ThiosulfateS2O32-SulfiteSO32-PerchlorateClO4-IodateIO3-ChlorateClO3-BromateBrO3-ChloriteClO2-HypochloriteOCl-HypobromiteOBr-CarbonateCO32-ChromateCrO42-Hydrogen carbonate or BicarbonateHCO3-DichromateCr2O72-Anions from Organic Acids:AcetateCH3COO-formateHCOO-Others:CyanideCN-AmideNH2-CyanateOCN-PeroxideO22-ThiocyanateSCN-OxalateC2O42-HydroxideOH-PermanganateMnO4-top Draganjac Home Page Compounds with charged species are formed by combining metals and non-metals. The charged species are referred to as ions. These charged species can be either positively or negatively charged, referred to as cations or anions. In sodium chloride (NaCl), for example, Na exists as a cation Na+, while Cl exists as an anion Cl–. Because both of them have charged opposing characteristics, they are attracted to one another and create an ionic connection. Both anions and cations are ions. They are drawn to one another because their electrical charges are opposing. An anion repels another anion, whereas a cation repels a cation. In a cation, the number of protons exceeds the number of electrons, whereas, in an anion, the number of electrons exceeds the number of protons.
What are Cations?
Formation of CationsThe most common cations of the typical elements are those in which all of the valence electrons have been lost. Consider sodium, an alkali metal. In the third major energy level, it has one valence electron. The sodium ion now has an octet of electrons from the second major energy level after losing that electron. An atom and an ion of a different atom (or two separate ions) that have the same electron configuration are referred to be isoelectronic. The sodium ion and the neon atom are isoelectronic.
Example of Cation: Sodium IonThe ionization of the sodium atom produces a monoatomic monocation, the sodium atom. Sodium is a metal that provides the shared pair of electrons to the anion during bond breaking, giving it a positive charge. The sodium ion has a chemical formula of Na+ and an ionic radius of 0.102 nm. Sodium ions are required for a variety of physiological functions in the body, including the regulation of body fluids such as blood, nerve impulse transmission, heart activity, and other metabolic functions. Properties of Cations
What are Anions?
Formation of AnionNon-metal atoms frequently gain electrons until their outermost main energy level reaches an octet. except for neon, all of these anions are isoelectronic. The greatest number of electrons obtained in the production of anions is three-under ordinary conditions.
Example of Anion: Chloride IonThe chloride ion is a diatomic monoanionic produced when the chlorine atom is ionized. Chlorine is a non-metal that takes the shared pair of electrons after a bond rupture, resulting in a negative charge. The chlorine ion has a chemical formula of Cl– and an ionic radius of 0.181 nm. The chloride ion is an electrolyte that is found in practically all bodily fluids. Properties of Anions
Difference Between Anions and CationsCations Anions A positive-charged ion or charged particle with a positive (+) charge on it, is referred to as a Cation. An anion is a negatively charged ion or a charged particle with a negative (-) charge.The number of protons in cations is greater than the number of electrons. The number of electrons in anions is greater than the number of protons.Metals, in general, produce cations. Non–metals, in general, produce anions.In electrolysis, cations are drawn to the negatively charged electrode. In electrolysis, anions are drawn to the positively charged electrode.Cations absorb electrons and become neutral atoms or molecules.Anions usually lose electrons and become neutral atoms or molecules.Ionic compounds are formed when cations establish electrostatic or ionic connections with anions.Ionic compounds are formed when anions establish electrostatic or ionic connections with cations.Cations are much smaller than anions.Anions are often bigger than cations.e.g. Na+, Mg+2, etc.e.g. Cl–, Br–, etc.FAQs on Cations and AnionsQuestion 1: Give any one difference between a Cation and an Anion. Answer:
Question 2: Why do Ions conduct Electricity? Answer:
Question 3: What are cations and anions? Answer:
Question 4: Explain what is Ion Exchange. Answer:
Question 5: What is the use of cations and anions? Answer:
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