| 释义 |
Definition of anion in English: anionnounˈanʌɪənˈænˌaɪən Chemistry A negatively charged ion, i.e. one that would be attracted to the anode in electrolysis. The opposite of cation Example sentencesExamples - During electrolysis an anion is attracted to the anode (positive electrode).
- Cations and anions can only exist in ionic compounds, nearly all of which are solids at room temperature, or in solution.
- When two atoms swap electrons to produce a cation and an anion, the two ions are attracted to each other.
- Nitric oxide can react with superoxide anions to produce peroxynitrite anions, thus quenching the biological effects of NO.
- Non-metals accept electrons in forming anions while metals donate electrons to form cations.
- Protons diffuse across a membrane from the anode chamber to the cathode chamber, where they react with the anions to form water or ferrocyanide ions.
- Cations within the middle solution are attracted to one electrode and anions to the other.
- To balance the influx of positive charge, organic anions, principally malate, and chloride are also accumulated.
- For ions dissolved in water, the rapid exchange of water molecules around the cation usually provides the space for an anion to approach the cation.
- All the positively charged ions, or cations, are together on the right side of the collage, and all the negatively charged ions, or anions, are on the left.
- The cation is positively charged, and the anion is negatively charged.
- In an ionic compound there are two different types of ions present, the positively charged cations and the negatively charged anions.
- It's easy to make a high oxidation state in an anion because an anion is electron-rich.
- The molecules or anions attached to the central atom are called coordinating groups or ligands.
- A typical reaction of such compounds is to accept an additional electron from an anion or to share electrons with an anion to gain a stable octet.
- Crystals of table salt consist of equal numbers of sodium cations and chlorine anions, cation-anion pairs being held together by a force of attraction.
- An ionic compound is composed of a network of ions that results in a three-dimensional matrix of cations and anions.
- These water molecules are ripped apart and change into hydroxyl anions, each of which is negatively charged and has one oxygen ion with a proton attached.
- It is called a cation if a positive charge exists and an anion if a negative charge exists.
- The functional groups of iron hydroxides may sequestrate some cations and anions.
Derivatives adjective Chemistry Neutral or anionic polymers condense DNA by packing the DNA due to excluded volume. Example sentencesExamples - The development of both cationic and anionic exchange materials did not occur until 1935.
- An example of an anionic emulsifier is stearic acid.
- The ability with which an emulsion wets a surface is dependent on the type of emulsifier used, and these can be anionic, cationic, or non-ionic.
- A new field allows searches on anionic groups such as silicate, phosphate, and carbonate.
- The anionic lipids promote faster adsorption whether present in the bilayer vesicles or in the surface monolayer.
Origin Mid 19th century: from anode or ana-, + ion. Definition of anion in US English: anionnounˈanˌīənˈænˌaɪən Chemistry A negatively charged ion, i.e. one that would be attracted to the anode in electrolysis. The opposite of cation Example sentencesExamples - In an ionic compound there are two different types of ions present, the positively charged cations and the negatively charged anions.
- Cations within the middle solution are attracted to one electrode and anions to the other.
- For ions dissolved in water, the rapid exchange of water molecules around the cation usually provides the space for an anion to approach the cation.
- Nitric oxide can react with superoxide anions to produce peroxynitrite anions, thus quenching the biological effects of NO.
- It is called a cation if a positive charge exists and an anion if a negative charge exists.
- The cation is positively charged, and the anion is negatively charged.
- An ionic compound is composed of a network of ions that results in a three-dimensional matrix of cations and anions.
- A typical reaction of such compounds is to accept an additional electron from an anion or to share electrons with an anion to gain a stable octet.
- During electrolysis an anion is attracted to the anode (positive electrode).
- Non-metals accept electrons in forming anions while metals donate electrons to form cations.
- These water molecules are ripped apart and change into hydroxyl anions, each of which is negatively charged and has one oxygen ion with a proton attached.
- The functional groups of iron hydroxides may sequestrate some cations and anions.
- It's easy to make a high oxidation state in an anion because an anion is electron-rich.
- When two atoms swap electrons to produce a cation and an anion, the two ions are attracted to each other.
- Protons diffuse across a membrane from the anode chamber to the cathode chamber, where they react with the anions to form water or ferrocyanide ions.
- To balance the influx of positive charge, organic anions, principally malate, and chloride are also accumulated.
- The molecules or anions attached to the central atom are called coordinating groups or ligands.
- Crystals of table salt consist of equal numbers of sodium cations and chlorine anions, cation-anion pairs being held together by a force of attraction.
- Cations and anions can only exist in ionic compounds, nearly all of which are solids at room temperature, or in solution.
- All the positively charged ions, or cations, are together on the right side of the collage, and all the negatively charged ions, or anions, are on the left.
Origin Mid 19th century: from anode or ana-, + ion. |