Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Which of the following is the result of 
-orbital contraction effect?
A
Similarity in the size of Al and Ga
B
Similarity in the properties of Li and Mg
C
High ionization energy of Tl as compared to In
D
Decrease in atomic size of 
-series elements
-series elements
Text Solution
Verified by ExpertsThe correct answer is:
C
-orbital contraction effect is seen in 6th period of periodic table. So, 
(ionization energy) is correct.
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