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Standard XII

Chemistry

Coordination and Oxidation Number

The radius ra...

Question

The radius ratio of Cs+ to Cl- is 0.90. If the radius of Cl- ion is 1.80 angstrong, the false statement regarding the CsCl structure is-1)the dis†an ce between the centres of Cl- ions is greater than 3.60angstrong, 2)dis†an ce between the centres of two Cl- ions is 3.60angstrong, 3)dis†an ce between Cs+ion and Cl-ion is 3.42angstrong, 4)dis†an ce between two Cs+ ions is 3.24angstrong.

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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 ?

C s C l

has cubic structure of ions in which

C s^{+}

ions is present in the body-centre of the cube. If density is

3.99 g c m^{- 3}

.
(a) Calculate the length of the edge of a unit cell.
(b) What is the distance between

C s^{+}

and

C l^{-}

ions?
(c) What is the radius of

C s^{+}

ion if the radius of

C l^{-}

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180 p m

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?

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 the body diagonal for CsCl which crystallises into a cubic structure with

C l^{-}

ions at the corners and

C s^{+}

ions at the centre of the unit cells is

7 o A

and the radius of the

C s^{+}

ion is

1.69 o A

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C l^{-}

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