Assertion If edge length of unit cell of LiCl, having NaCl type structure, is 5.14 mathringA, the ionic radius of Cl -ion is 1.82 mathringA. Reason Anion-anion contact is retained in LiCl structure because anions constitute the lattice.

Question

Assertion If edge length of unit cell of LiCl, having NaCl type structure, is 5.14 mathringA, the ionic radius of Cl -ion is 1.82 mathringA. Reason Anion-anion contact is retained in LiCl structure because anions constitute the lattice. (A) If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion: (B) If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion: (C) If Assertion: is true but Reason: is false (D) If both Assertion: and Reason: are false

Tardigrade Admin · Accepted Answer

If anion-anion contact is retained, 4 r- =√2 a r- =(√2 × 5.14/4) =1.82 mathringA Thus, Reason is the correct explanation of Assertion.

Q. Assertion If edge length of unit cell of $L i Cl$ , having $N a Cl$ type structure, is $5.14 \overset{˚}{A}$ , the ionic radius of $C l^{-}$ ion is $1.82 \overset{˚}{A}$ .
Reason Anion-anion contact is retained in $L i Cl$ structure because anions constitute the lattice.

If both Assertion: and Reason: are true and the Reason: is the correct explanation of the Assertion:

If both Assertion: and Reason: are true but the Reason: is not the correct explanation of the Assertion:

If Assertion: is true but Reason: is false

If both Assertion: and Reason: are false

If anion-anion contact is retained,
$4 r^{-} = 2 a$
$r^{-} = \frac{2 \times 5.14}{4}$
$= 1.82 \overset{˚}{A}$
Thus, Reason is the correct explanation of Assertion.

Q. Assertion If edge length of unit cell of LiCl, having NaCl type structure, is 5.14A˚, the ionic radius of Cl−ion is 1.82A˚. Reason Anion-anion contact is retained in LiCl structure because anions constitute the lattice.