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Ionic compound formation - Metal & Non Metals, Chemistry CBSE Class 10 Video Lecture

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FAQs on Ionic compound formation - Metal & Non Metals, Chemistry CBSE Class 10 Video Lecture

1. How are ionic compounds formed?
Ans. Ionic compounds are formed through the transfer of electrons between a metal and a non-metal. The metal loses electrons to form a positively charged ion (cation), while the non-metal gains those electrons to form a negatively charged ion (anion). The oppositely charged ions then attract each other due to electrostatic forces, resulting in the formation of an ionic compound.
2. What are the characteristics of ionic compounds?
Ans. Ionic compounds typically have high melting and boiling points due to the strong electrostatic forces between the ions. They are also usually hard and brittle solids at room temperature. Ionic compounds are good conductors of electricity when dissolved in water or melted, but not in their solid state. They also tend to have a crystalline structure.
3. Can ionic compounds conduct electricity in their solid state?
Ans. No, ionic compounds cannot conduct electricity in their solid state. This is because the ions are held in fixed positions within the crystal lattice and cannot move to carry the electric charge. However, when dissolved in water or melted, the ions become free to move and can conduct electricity.
4. Give an example of an ionic compound and its formation.
Ans. Sodium chloride (NaCl) is a common example of an ionic compound. It is formed by the transfer of an electron from a sodium atom (metal) to a chlorine atom (non-metal). The sodium atom loses one electron to form a positively charged sodium ion (Na+), while the chlorine atom gains that electron to form a negatively charged chloride ion (Cl-). The attraction between the oppositely charged ions results in the formation of NaCl.
5. Why do ionic compounds have a crystalline structure?
Ans. Ionic compounds have a crystalline structure because the positive and negative ions arrange themselves in a repeating pattern throughout the crystal lattice. This arrangement maximizes the electrostatic attraction between the ions and minimizes repulsion. The regular repeating pattern of the ions gives ionic compounds their characteristic shape and structure.
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