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Solution


Q.

The correct orders among the following are:                  [2025]

A. Atomic radius : B < Al < Ga < In < Tl

B. Electronegativity : Al < Ga < In < Tl < B

C. Density : Tl < In < Ga < Al < B

D. 1st Ionisation Energy : In < Al < Ga < Tl < B

Choose the correct answer from the options given below:
1 B and D Only  
2 A and C Only  
3 C and D Only  
4 A and B Only  

Ans.

(1)