Advertisement Remove all ads

What is an Ion ? How is an Ion Formed ? Explain with the Help of Two Examples of Different Ions. - Science

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
Answer in Brief

What is the difference between a cation and an anion ? Explain with examples.

Advertisement Remove all ads

Solution

1. Cation a positively charged ion. 1. Anion is a negatively charged ion.
2. When a neutral atom loses one or more electrons, it develops an overall positive charge and becomes a cation. 2.  When a neutral atom gains one or more electrons, it develops an overall negative charge and becomes an anion.
3. A cation has fewer electrons than the neutral (normal) atom of that element. 3. An anion has more electrons than the neutral (normal) atom of that element.
4. Example: Sodium atom readily loses an electron to form a positively charged sodium ion.
Na → Na+ + e
4. Example: Chlorine atom accepts an electron to become a negatively charged chloride ion.
Cl + e → Cl
Similarly, calcium atom loses two electrons to become a positively charged calcium ion. Thus, the cation formed has two units of positive charge.
 Ca → Ca2++ 2e
Oxygen atom readily accepts two electrons to become a negatively charged oxygen ion. Thus, the oxygen anion formed has two units of negative charge.
O + 2e− → O2
Concept: Ions (Radicals) and Its Types
  Is there an error in this question or solution?

APPEARS IN

Lakhmir Singh Class 9 Chemistry - Science Part 2
Chapter 3 Atoms and Molecules
Long Answers | Q 27.1 | Page 152
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×