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Statement 1: If the length of the unit cell of LiCl having NaCl structure is 5.14 Ao, the ionic radius of Cl- ion is 1.82 Ao.Statement 2: Anion—anion contact is retained in LiCI structure because anions constitute the lattice.

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a

Both Statement 1 and Statement 2 are true

b

Both Statement 1 and Statement 2 are false.

c

Statement 1 is true but Statement 2 is false.

d

Statement 1 is false but Statement 2 is true.

answer is A.

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Detailed Solution

If anion-anion contact is retained, then as shown in the adjoining figure. Interionic distance of LiCl=a/2=5.14Ao/2=2.57AoBC=AB2+AC2=(2.57)2+(2.57)2=3.63AoRadius of Cl-12BC=12×3.63=1.81AoHence, statement 1 and 2 are correct.

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Statement 1: If the length of the unit cell of LiCl having NaCl structure is 5.14 Ao, the ionic radius of Cl- ion is 1.82 Ao.Statement 2: Anion—anion contact is retained in LiCI structure because anions constitute the lattice.