Which of the following sequences represents the correct "W-shaped" trend of the first ionization ent — Periodic Table and Periodicity Chemistry Question
Question
Which of the following sequences represents the correct "W-shaped" trend of the first ionization enthalpies for the Group 13 elements?
Answer: B
💡 Solution & Explanation
Due to transition contraction ($Ga > Al$) and lanthanide contraction / inert pair effect ($Tl > In$), the irregular IE trend for Group 13 is $B > Tl > Ga > Al > In$.
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