The Solid State

Short Answer Type

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What is the co-ordination number of atoms:
(i) in a cubic close packed structure?
(ii) in a body centred cubic structure?

(i) 6:6
(ii) 8:8

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    What is the total number of atoms per unit cell in a face-centred cubic (fcc) structure?
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    Define the term ‘amorphous’. Give a few examples of amorphous solids. 
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    Long Answer Type

    How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain.
    644 Views
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    Short Answer Type

    What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass? 
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    Why is potassium chloride sometimes violet instead of pure white.
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    What type of substances exhibits anti-ferromagnetism?
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    What is the coordination number of each type of ions in a rock-salt type crystal structure?
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    What is meant by the term ‘coordination number’?

    (ii) What is the coordination number of atoms:

    (a) in a cubic close-packed structure?

    (b) in a body-centred cubic structure?

    278 Views
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    Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous:

    (i) Tetra phosphorous decoxide (P4O10) 

    (ii) Ammonium phosphate (NH4)3PO4

    (iii) SiC

    (iv) I2 

    (v) P4

    (vi) Plastic

    (vii) Graphite

    (viii) Brass

    (ix) Rb

    (x) LiBr

    (xi) Si 

     
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