Question

In a cell having A, B & C all the A atoms are present at the corners of the cube, 1/4 of the edges are occupied by B and all the tetrahedral voids of A are occupied by C. What is the formula of the lattice?
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Answer 1

Answer:

Effective number of A=

2

1

×

2

1

×6=

2

3

(Alternate faces)

Effective number of C=

2

1

×

4

1

×12+1 (Alternate edges and body centre) =

2

5

Formula =A

2

3

C

2

5

=A

3

C

5

Explanation:

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FROM: ACE7257

Answer 2

Explanation:

A = 8 × 1/8 = 1

B = 12 × 1/4 = 3 × 1/4 = 3/4

C = 2

A B3/4 C2

A4 B3 C8