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Periodic Table Group 13 Ionization Energy Trend

1

Choose the best answer

The correct decreasing order of first ionization energy among Group 13 elements is:

Verified Answer & Explanation⌄

Correct Answer: A) B > Tl > Ga > Al > In

Concept Explanation

B has the highest value, while poor shielding by d- and f-electrons causes irregularities in the heavier Group 13 elements.

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