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Question

# Match the column I having type of lattice point and its contribution to one unit cell in column II and mark appropriate choice.Column I(Lattice point)column II(Contribution to one unit cell)(A)Corner(i)1(B)Edge(ii)1/8(C)Face Cenre(iii)1/4(D)Body centre(iv)1/2

A
(A) (ii), (B) (i), (C) (iii), (D) (iv)
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B
(A) (ii), (B) (iii), (C) (iv), (D) (i)
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C
(A) (i), (B) (ii), (C) (iv), (D) (iii)
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D
(A) (iii), (B) (iv), (C) (D) (i), (ii)
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Solution

## The correct option is C (A) → (ii), (B) → (iii), (C) → (iv), (D) →(i)Atoms present at a corner are shared by 8 unit cells. So, its contribution to unit cell is 1/8.Atoms present at a edge of unit cell is shared by 4 unit cells. So, its contribution to unit cell is 1/4.Atoms present at face centers are shared by 2 unit cells. So, its contribution to a unit cell is 1/2.Atoms present at body is completely inside the cube. So, it is not shared by any other unit cell. So, it has full contribution to a unit cell.Hence, correct answer is option B.

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