Q.

Statement 1: Coordination number in simple cubic unit cell is 6
Statement 2: Effective number of atoms in simple cubic unit cell is 1

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a

Both statements 1 and 2 are correct

b

Statement 1 is correct statement 2 is incorrect

c

Statement 1 is incorrect statement 2 is correct

d

Both statements 1 and 2 are incorrect

answer is A.

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Detailed Solution

In simple cubic crystal each sphere is in contact with 6 other spheres, coordination number = 6

Effective number of atoms in simple cubic crystal = 8×18 = 1

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Statement 1: Coordination number in simple cubic unit cell is 6Statement 2: Effective number of atoms in simple cubic unit cell is 1