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What is an ion? Explain the types of ion with examples.

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Charged species are called ions. Positively charged ions are called cations, and negatively charged ions are called anions.
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Senior Lecturer in Chemistry IIT-JEE / NEET

An ion is a positively or negatively charged atom (or group of atoms). An ion is formed by the loss or gain of electrons by an atom, so it contains an unequal number of electrons and protons. Example: Sodium ion Na+, magnesium ion Mg2+, chloride ion Cl–, and oxide ion O2–.
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An ion is a positively or negatively charged atom (or group of atoms). An ion is formed by the loss or gain of electrons by an atom, so it contains an unequal number of electrons and protons. Example: Sodium ion Na+, magnesium ion Mg2+, chloride ion Cl, and oxide ion O2–.

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A charged species from either by the gain of electron or loose of the electron is known as an ion. Ions are of two types: Cation and Anion Cations are formed by loosing of electrons. Example: Na+ is cation formed by loosing of an electron from Na atom. Anions are formed by gaining electrons. Example: Cl-...
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A charged species from either by the gain of electron or loose of the electron is known as an ion. 

Ions are of two types:

Cation and Anion

Cations are formed by loosing of electrons.

Example: 

Na+ is cation formed by loosing of an electron from Na atom.

Anions are formed by gaining electrons.

Example:

Cl- is anion formed by gaining an electron by the Cl atom.

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When an atom loses or gains electron it became ion. Ions are of two types positive ion called a cation and negative ion are called an anion.
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NPTEL Gold Medalist Mechanical Engineering Graduate

Basically ions are the charged atoms or molecules. On the basis of type of charge on them, they are of the 2 types. (1) Cations (e. g. Ca++,Na+,Mg++ etc) (2)Anions (e.g. Cl-, F-,Br-, I- etc)
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Academician having 22yrs of exp

The atoms which have charges like +ve and -ve is an ion. Ex. Na+ or Cl-. When in sol of NaCl current is passed at that time Na + ions move to the -ve electrode(cathode) and Cl- This moves to the positive electrode (anode) process is known as Electrolysis. How it becomes Na+? The atomic no of Na is...
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The atoms which have charges like +ve and -ve is an ion. Ex. Na+ or Cl-. When in sol of NaCl current is passed at that time Na + ions move to the -ve electrode(cathode) and Cl- This moves to the positive electrode (anode) process is known as Electrolysis. 

How it becomes Na+? 

The atomic no of Na is 11 i.e. 1s2, 2s2,2p6, 3s1. As the last shell contains one unbalanced electron. Na(sodium) can easily give up this electron. As we know that no. of an electron is equal to the no. of protons. When Na releases 1 electron no of protons in the nucleus increases, hence Na becomes Na+.

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Chemistry teacher with 9 years of Experience in College and School

An atom or molecule having a net charge (positive or negative) on it is called an Ion. Positively charged ion is called Cation, and negatively charged ion is called Anion. E.g., Sodium (Na) has 11 electrons in a neutral state, and by losing one electron, it forms a sodium cation (Na+), and Chlorine...
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An atom or molecule having a net charge (positive or negative) on it is called an Ion. Positively charged ion is called Cation, and negatively charged ion is called Anion. 

E.g., Sodium (Na) has 11 electrons in a neutral state, and by losing one electron, it forms a sodium cation (Na+), and Chlorine has 17 electrons in a neutral state. By gaining one electron, it forms chloride anion (cl-).

Other examples: Mg2+, Al3+, NO3-, and SO42-.

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Professional Tutor with 6 years of experience

Ion is an electrically charged atom formed by the gain or loss of an electron. Positive ions are created by the loss of an electron from the neutral atom, and negative ion is formed by the gain of electrons to a neutral atom. Atoms gain or lose electrons to achieve stability.
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An ion is a charged species; when placed in solution, it will have its ionic environment which is composed of solvent molecules directed by the opposite charge of that of ion. It can be of two types: 1. Cation: Have a positive charge. Generally, metals exist as cations. Ex Mg2+, Sc3+. 2. Anion Have negative...
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An ion is a charged species; when placed in solution, it will have its ionic environment which is composed of solvent molecules directed by the opposite charge of that of ion.

It can be of two types:

1. Cation: Have a positive charge. Generally, metals exist as cations. Ex Mg2+, Sc3+.

2. Anion Have negative charge. Generally, p-block lighter element or non-metals exist as anions. Ex: F-, (SO4)2-

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An ion is any charged particle. Metals having excess free electrons tend to lose electrons and form positive ions called cation Na+, Ca2+. Similarly, non-metals tend to gain electrons and for negative ions called anions Cl-, O2- etc.
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