AMIE Exam Lectures- Materials Science & Engineering | Ceramic Crystal Structure | 3.3 Part1

Materials Science & Engineering

Ceramic Crystal Structure

3.3
Timeline
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Ceramic Crystal System -Minimum 2 Types of Atoms
-Bonding Ionic, Covalent or Mixed
-Ionic System Cation and Anion
-Characteristics affecting Crystal Structure
-Electrically Neutral
-Cation/Anion Size Ratio

Maximum Number of Opposite Charged ion Surround
-Co-Ordination number depends on

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[alibarech]

sir in case of CaF2 the size of cation is greater then size of anion and you said that the size of anion is alway larger then cation plz help

[pulkitsharma]

Dear edupedia. Thanks for the explanation. Can you please explain that in last slide when cation/anion radius ratio is 1 then in that case coordination number should be 12 as in crystal structure maximum number was 12 because of same size of atom. In the case if ratio is 1 means atom size is same so in that case maximum anion surrounding cation will be 12.

[dianadelatorre]

Thank you for such a good explanation!

[saarthakcoachingclasses]

Thanku sir..u are of great help to me..may God bless u.

[praveench]

why is it called a "ceramic" crystal structure? generally the word ceramic implies refractoriness and hardness. Does these properties have anything to do with the name??

[Yodavid]

7:31 you meant further repulsion between the electrons

[the_iconoclast]

which bond more predominant... ionic or covalent

[AsimAli-rwvp]

sir thoda hindi main bhe bol lo please