Q.

Match the following 
 

 List I 
(Group 13 elements)
 List- II
(metallic radius, pm)
AAlI135
BGaII143
CInIII170
DTIIV167

The correct answer is

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a

A-III, B-IV, C-II, D-I

b

A-I, B-II, C-IV, D-III

c

A-II, B-I, C-IV, D-III

d

A-II, B-I, C-III, D-IV

answer is B.

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Detailed Solution

The metallic radius for Al is 143 pm, Ga is 135 pm, In is 167 pm and Tl is 170 pm. Metallic radius of Ga is less than Al because of d-block contraction.

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