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Standard XII

Chemistry

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In CsCl type ...

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In CsCl type of ionic crystal Why Cs ion does not lie at corners? Is Cs ion is greater than Cl ion?

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Similar questions

Q. In a cubic crystal of CsCl (density

= 3.97

g cm

^{- 3}

), the eight corners are occupied by

C l^{-}

ions with

C s^{+}

ions at the body centre. Calculate the distance (in

˚ A

) between the neighbouring

C s^{+}

and

C l^{-}

ions.

Q. Assertion (A) : In

C s C l

crystal, the coordination number of

C s^{\oplus}

ion is

8

.
Reason (R) :

C l^{⊖}

ions in

C s C l

adopt bcc type of packing.

The radius ratio of $C s^{+}$ to $C l^{-}$ is 0.90. If the radius of $C l^{-}$ ion is $1.80 \circ A$ , the false statement regarding the CsCl structure is ?

Q. If the length of the body diagonal for CsCl which crystallizes into a cubic structure with

C l^{-}

ions at the corners and

C s^{+}

ions at the centre of the unit cells is

7 ˚ A

and the radius of the

C s^{+}

ion is

1.69 ˚ A

, what is the radius of

C l^{-}

ion in

˚ A

Q. If the length of body diagonal for

CsCl

, which crystallises into a cubic structure with

{Cl}^{-}

ions at the corners and

{Cs}^{+}

ions at the centre of unit cell is

7 ˚ A

and the radius of

{Cs}^{+}

ion is

1.69 ˚ A

. The radius of

{Cl}^{-}

ion?

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