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Atomic or ionic radius: trend or the largest or smallest among given elements

This type of question, asked 4 times: 10 May 2023 S2, 11 May 2023 S2, 22 Apr 2025 S2, 15 Apr 2026 S1. All 5 questions below, oldest first.

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  1. Question 1

    10 May 2023 S2

    71
    If four different elements A, B, C and D having electronic configurations as A=[Ne]3s23p4A = [\text{Ne}]3s^23p^4, B=[Ne]3s23p5B = [\text{Ne}]3s^23p^5, C=[Ar]3d104s24p4C = [\text{Ar}]3d^{10}4s^24p^4 and D=[Ar]3d104s24p5D = [\text{Ar}]3d^{10}4s^24p^5. Identify the element with largest atomic radius.

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  2. Question 2

    11 May 2023 S2

    60
    Which of the following element in +1 oxidation state has largest ionic radius?

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  3. Question 3

    22 Apr 2025 S2

    60
    Which is the correct increasing order of atomic radii of Na, K, Mg, Rb?

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  4. Question 4

    15 Apr 2026 S1

    4
    What happens to the size of atoms in p-block elements when we move from left to right in the same period?

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  5. Question 5

    15 Apr 2026 S1

    3
    Which group elements have the smallest atomic radii in their respective periods?

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