CBSE Class 12 Chemistry Solid State Notes Set B

Download CBSE Class 12 Chemistry Solid State Notes Set B in PDF format. All Revision notes for Class 12 Chemistry have been designed as per the latest syllabus and updated chapters given in your textbook for Chemistry in Class 12. Our teachers have designed these concept notes for the benefit of Class 12 students. You should use these chapter wise notes for revision on daily basis. These study notes can also be used for learning each chapter and its important and difficult topics or revision just before your exams to help you get better scores in upcoming examinations, You can also use Printable notes for Class 12 Chemistry for faster revision of difficult topics and get higher rank. After reading these notes also refer to MCQ questions for Class 12 Chemistry given on studiestoday

Revision Notes for Class 12 Chemistry Unit 01 The Solid State

Class 12 Chemistry students should refer to the following concepts and notes for Unit 01 The Solid State in Class 12. These exam notes for Class 12 Chemistry will be very useful for upcoming class tests and examinations and help you to score good marks

Unit 01 The Solid State Notes Class 12 Chemistry

 

 

 Class 12 Chemistry-Solid State

Class 12 Chemistry-Solid State

UNIT CELLS

CBSE Class 12 Chemistry-Solid State 1

CBSE Class 12 Chemistry-Solid State 2

CBSE Class 12 Chemistry-Solid State 3

• Vacancy defect decreases the density while interstitial defect increases the density of the substance.
 
• F-centres are the anonic sites occupied by unpaired electrons. They impart colour to the crystal.
 
• Diamagnetic substances – have all paired electrons and weakly repelled by the magnetic field.Eg. TiO2 , NaCl
 
• Paramagnetic substances – have unpaired electrons and attracted by the magnetic field.Eg. O2 , Cu2+ , Fe2+
 
• Ferromagnetic substances – have permanent magnetism. In it, dipoles are aligned in the same direction. Eg. Ni, Co
 
• Antiferromagnetic substances – have net dipole alignment zero. Eg. MnO, FeO.
 
• Ferrimagnetic substances – have net dipole. Eg. Fe3O4, MgFe2O4
 
• Solids are classified into three groups on the basis of their electrical properties;
 
• Conductors - generally includes metals having conductivity of the range 104–107 ohm-1m-1
 
• Semi-conductors – Have intermediate conductivities of the range 10-6–104 ohm-1m-1 As temperature increases there is the rise in conductivity as electrons from the valence band jump to the conduction band.
 
• Insulators -solids which have very low conductivity of the range 10-10–10-20ohm-1m-1
 
• Doping is the introduction of small amount of impurity in the crystal.
 
• n-type semi-conductor: When silicon or germanium is doped with a group 15 element like P or As, the dopant atom forms four covalent bonds like a Si or Ge atom but the fifth electron not used in bonding, becomes delocalized and contributes its share towards electrical conduction. Thus, Si or Ge doped with P or As is called a n-type semi-conductor.
 
• p-type semi-conductor: : When silicon or germanium is doped with a group 13 element like B or Al, the dopant atom forms three covalent bonds but at the position of fourth electron a hole is created. This hole moves through the crystal like a positive charge giving rise to electrical conduction. Thus, Si or Ge doped with B or Al is called a p-type semiconductor.

 

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CBSE Class 12 Chemistry Unit 01 The Solid State Notes

We hope you liked the above notes for topic Unit 01 The Solid State which has been designed as per the latest syllabus for Class 12 Chemistry released by CBSE. Students of Class 12 should download and practice the above notes for Class 12 Chemistry regularly. All revision notes have been designed for Chemistry by referring to the most important topics which the students should learn to get better marks in examinations. Our team of expert teachers have referred to the NCERT book for Class 12 Chemistry to design the Chemistry Class 12 notes. After reading the notes which have been developed as per the latest books also refer to the NCERT solutions for Class 12 Chemistry provided by our teachers. We have also provided a lot of MCQ questions for Class 12 Chemistry in the notes so that you can learn the concepts and also solve questions relating to the topics. We have also provided a lot of Worksheets for Class 12 Chemistry which you can use to further make yourself stronger in Chemistry.

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