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Most Important Selected Qs for JEE AdvancedChemistrySolid State

A compound A B has zinc blende structure with ' A ' atoms at corners and face centre of the unit cell. If all the atoms present in one body diagonal are removed, the formula of the compound becomes A_x B_y . The sum (x+y) is:

Correct answer

9

Step-by-step solution

A present in corners and face centre. B present in alternate tetrahedral voids. No. of A per unit cell =6 1 8 +6 1 2 = 15 4 No. of B per unit cell =4-1=3 aligned & x: y= 15 4 : 3=5: 4 & x+y=5+4=9 aligned

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