Q.

Ionic radii (Å) of Sb3+,Bi3+and As3+follow the order

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a

Sb3+>Bi3+>As3+

b

Bi3+>As3+>Sb3+

c

Bi3+>Sb3+>As3+

d

As3+>Sb3+>Bi3+

answer is C.

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Detailed Solution

Ionic radii (A˙) of Sb3+,Bi3+and As3+follow the order :Bi3+>Sb3+>As3+because ionic and atomic radii increases on moving down the group due to addition of extra shells.
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