Table of Contents
Overview of topic
Classification of Crystalline Solids:
On the basis of the sort of bonding inherent in their constituent particles, these solids are divided into four classes.
1. Molecular Solids
Molecules are the particles that make up these solids. The weak Van der Waal forces of attraction hold these molecules together. These solids are soft by nature due to the presence of weak forces. Because there are no free electrons in molecular solids, they are poor conductors of electricity. They evaporate readily because their melting and boiling temperatures are low.
For example ice, solid CO2 (dry ice), etc.
2. Ionic Solids
These are the solids that ions produce. Ions are charged particles that come in two types: cations (positively charged) and anions (negatively charged) (negatively charged). In the ionic solid, these ions are organized in a systematic manner.
Electrostatic attraction is the force of attraction between cations and anions. These powerful forces contribute to the solids’ hardness, brittleness, and high melting points. Only in a molten/aqueous condition do these substances conduct electricity.
Examples of such solids are sodium chloride(NaCl),Lithium fluoride(LiF) etc.
3. Covalent Solids
They’re also known as network solids since they’re made up of a dense network of covalent bonds between the atoms that make up the solid. Because all of the electrons of the constituent atoms are shared to create covalent bonds, covalent solids are also poor conductors of electricity.
4. Metallic Solids
The structure of these solids has fixed positive ions surrounded by free electrons. Metallic solids are good conductors of electricity and heat because of these unbound electrons. Metallic solids’ melting and boiling values can range from moderate to high. They might be hard or soft solids.
Metals like Copper, Nickel, Manganese are some examples.
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FAQs (Frequently Asked Questions)
- Can I score full marks in Class 12 Chemistry Chapter 1 Topic-Classification of Crystalline Solids?
- What are the benefits of solving NCERT solutions by Infinity Learn?
- How can I download the NCERT Solutions of this exercise from the Infinity Learn website?
Q. Can I score full marks in Class 12 Chemistry Chapter 1 Topic-Classification of Crystalline Solids?
Ans. Yes, you can easily score full marks in Class 12 Chemistry Chapter 1 Topic-Classification of Crystalline Solids. All you need to do to score full marks in Maths is a frequent practice. All of the concepts should be clear in this subject since many questions are expected in the board examination from this chapter. This will help you make your confidence up and well versed with the chapter and can score full marks in the exam. You should also refer to the NCERT Solutions of this chapter.
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Ans. NCERT solutions by Infinity Learn is designed strictly according to the latest CBSE syllabus and it is the best way to study this chapter containing all the important points and formulas. The subject matter experts designed these NCERT solutions with an aim to make the learning process a most convenient way.
Q. How can I download the NCERT Solutions of this exercise from the Infinity Learn website?
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