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Ionic radius in the +3 state across lanthanoids or actinoids (contraction)

This type of question, asked 5 times: May 2022 S1, 3 May 2023 S2, 23 Apr 2025 S1, 25 Apr 2025 S2, 18 Apr 2026 S1. All 5 questions below, oldest first.

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  1. Question 1

    May 2022 S1

    77
    Identify the element with smallest ionic radius in +3 oxidation state from following.

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  2. Question 2

    3 May 2023 S2

    90
    Identify the element having smallest ionic size in +3 state from following.

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  3. Question 3

    23 Apr 2025 S1

    88
    Which element from following has largest ionic size in +3 state?

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  4. Question 4

    25 Apr 2025 S2

    87
    Which element from following has smallest ionic size in +3 state?

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  5. Question 5

    18 Apr 2026 S1

    31
    Which actinoid from following has smallest ionic size in +3+3 state?

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