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(a) What is the significance of the following in crystal structure : (i) a, b and c (b) (ii) alpha, beta and gamma (b) What are the values of the above in tetragonal structure ? Give an example of a solid having this structure. |
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Answer» Solution :(a) (i) a, b and c represent the DIMENSIONS along the THREE edges of the unit CELL. (ii) `alpha, beta and gamma` represent the angles between the edges, `alpha` between b and c, `beta` between a and c and `gamma` between a and b. (b) In tetragonal structure, the values are as under : `a=b ne c` `alpha=beta=gamma=90^(@)` Tin oxide, `SnO_(2)`, is an example of this TYPE of structure. |
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