What is the following is anion?

An anion is an atom that has more electrons than protons—in other words, an anion is an atom with a negative charge. … The negatively charged ions are called anions, and the positively charged ions are cations.

What are examples of anions?

Examples of anions include the following:
  • Chlorine: Cl.
  • Hydroxide: OH.
  • Iodide: I.
  • Dichromate: Cr2O. 72
  • Oxide anion: O. 2
  • Sulfate anion: SO. 42

What are in anions?

An anion is an ion with negative charge, meaning it has more electrons than protons. Anions are formed when an atom gains one or more electrons: the gain of the negatively-charged electron(s) results in an overall negative charge.

Which element is a anion?

Halogens always form anions, alkali metals and alkaline earth metals always form cations. Most other metals form cations (e.g. iron, silver, nickel), whilst most other nonmetals typically form anions (e.g. oxygen, carbon, sulfur).

What is a basic anion?

In basic salts, the anion is the conjugate base of a weak acid. In general, anions A- can be considered the conjugate base of the acid HA. … For example, the F- anion is the conjugate base of HF, a weak acid; therefore, it produces a basic solution when dissolved in water.

What is an anion name?

The anion is named by taking the elemental name, removing the ending, and adding “ide.” For example, F1 is called fluoride, for the elemental name, fluorine. The “ine” was removed and replaced with “ide.” To name a compound, the cation name and the anion named are added together.

What are the anion groups?

  • Anions are formed by the addition of one or more electrons to the outer shell of an atom.
  • Group 17 elements add one electron to the outer shell, group 16 elements add two electrons, and group 15 elements add three electrons.

What are anions and cations give examples?

Anions are negatively charged ions. They are formed when non-metal gains the electrons. … Some examples of anions are Iodide (I), chlorine (Cl), hydroxide (OH). When sodium a cation is depicted as Na+, the plus charge indicator shows that it has one electron less than the total number of protons.

Are metals cations or anions?

First, each element that forms cations is a metal, except for one (hydrogen), while each element that forms anions is a nonmetal. This is actually one of the chemical properties of metals and nonmetals: metals tend to form cations, while nonmetals tend to form anions.

What are the Group 3 cations?

Group III (Al3+, Cr3+, Fe3+, Zn2+, Ni2+, Co2+, Mn2+) cations produce slightly soluble sulfides (Ksp values more than 10-20) so they can be precipitated by relatively high amounts of sulfide ion; this can be achieved by adding a basic solution of H2S.

What are anions Class 9?

2)Anion:A negatively charged ion is known as anion.An anion is formed by the gain of one or more electrons by an atom. An anion is formed by the gain of one or more electrons by an atom. … Due to more electrons than protons,an anion has a negative charge in it.

What are the Group 5 cations?

Group 5 cations are magnesium (II) Mg2+, potassium (I) K+ and sodium (I) Na+. These cations do not react with hydrochloric acid HCl, hydrogen sulphide H2S, ammonium sulphide and ammonium carbonate (NH4)2CO3. Magnesium does show similar reactions to IVth group cations; it forms basic magnesium carbonate MgCO3.Mg(OH)2.

What are the group 4 cations?

5. Precipitation of Group 4-Cations • The Group IV cations are Ba2+, Sr2+, Ca2+. These metals form chlorides, sulfides and hydroxides that are soluble under that prevail in the precipitations of Group I, II, and III.

What is the group reagent of group 4?

Fourth group- Fourth group cations are Ni2+,Co2+,Mn2+,Zn2+ and the group reagent is Hydrogen Sulphide (H2S) in presence of NH4OH .

What is a group 1 cation?

Group 1 cations includes those cations who selectively precipitates as chlorides by addition of diluted hydrochloric acid. These cations are respectevely: Ag+,Pb2+,Hg22+ .

What is the group reagent of 5th group?

Ammonium sulphide is used for testing 5th group cations.

Which is group reagent for 3a group?

The group reagent of 3rd group is ammonium sulphide solution or hydrogen sulphide gas in the presence of ammonia and ammonium chloride.

What are the group reagent of group 6?

Salt Analysis of Cations and Anions
Group Group Reagent Radicals
III Group O.S. +NH4Cl + NH4OH AI2+ ,Fe3+
IV Group O.S. + NH4CI + NH4OH +H2S Ni2+ ,Mn2+ , Zn2+ ,Co2+
V Group O.S. + NH4CI + NH4OH +(NH4)2CO3 Ba2+, Ca3+, Sr2+
VI Group O.S + NH4CI + NH4OH + NaH2PO4 Mg2+

What is a Group 2 cation?

Group 2 consists of those cations who precipitate as sulphides around pH 0-2. … The precipitating reagent is sodium sulphide Na2S. The solution is acidic because of hydrochloric acid; it corresponds to the supernatant coming from the analysis of group 1 cations.

What is the group reagent of Group 2?

The group reagent for Group 2 anion is concentrated sulfuric acid (H2SO4).

What is the group reagent of 2nd group Basic radical?

(NH4)2CO3 solution.