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CGP EDU Academic Team
Published on: August 12, 2026
Electropositive character for the elements of group 13 follows the order.
Text Solution
Verified by ExpertsThe correct answer is:
D
As we move from B to Al, the sum of 
decreases substantially (6887 KJ 
to 5137 kJ 
) due to increase in the atomic size and hence Al has a high tendency to lose electrons. Since the electronde potentials increase from Al to Tl, therefore, their electronpositive character decreases, i.e., Al (- 
) to Ga 
to In 
to Tl 
accordingly.
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