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Grade: 12th pass
        
Question number 6.......................chapter Solid state 
8 months ago

Answers : (1)

Sujit Kumar
111 Points
							
Originally...
A=8x1/8   =1
B=6x1/2   =3
C=1x1/1   =1
D=12x1/4 =3
 
But now all atoms on a diagonal plane are removed
i.e.
     4 corner atoms                (4x1/8  =0.5)
     2 face-centered atoms    (2x1/2  =1.0)
     1 body-centered atom     (1x1/1  =1.0)
     2 edge-centered atoms   (2x1/4  =0.5)
 
Hence.
  A=1-0.5   =0.5
  B=3-1      =2
  C=1-1      =0
  D=3-0.5   =2.5
 
Hence the molecular formula = A0.5B2C0D2.5 = AB4D5
 
Answer: (4)
8 months ago
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