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Oxidising or reducing nature of ions of groups 13 and 14

This type of question, asked 5 times: 6 Apr 2024, 29 Jan 2025, 7 Apr 2025, 4 Apr 2026 S2, 6 Apr 2026 S1. All 6 questions below, oldest first.

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  1. Question 1

    6 Apr 2024

    132
    The number of ions from the following that are expected to behave as oxidising agent is:
    Sn4+,Sn2+,Pb2+,Tl3+,Pb4+,Tl+Sn^{4 +},Sn^{2 +},Pb^{2 +},Tl^{3 +},Pb^{4 +},Tl^{+}

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  2. Question 2

    29 Jan 2025

    27
    The standard reduction potential values of some of the p-block ions are given below. Predict the one with the strongest oxidising capacity.

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  3. Question 3

    7 Apr 2025

    118
    The correct statements from the following are : (A) Tl3+{Tl}^{3 +} is a powerful oxidising agent (B) Al3+{Al}^{3 +} does not get reduced easily (C) Both Al3+{Al}^{3 +} and Tl3+{Tl}^{3 +} are very stable in solution (D) Tl+{Tl}^{+}is more stable than Tl3+{Tl}^{3 +} (E) Al3+{Al}^{3 +} and Tl+{Tl}^{+}are highly stable Choose the correct answer from the options given below :

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  4. Question 4

    7 Apr 2025

    38
    The group 14 elements A and B have the first ionisation enthalpy values of 708 and 715 kJ mol−1715\text{ }kJ{\text{ }mol}^{- 1} respectively. The above values are lowest among their group members. The nature of their ions A2+A^{2 +} B4+B^{4 +} respectively is.

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  5. Question 5

    4 Apr 2026 S2

    33
    The electronegativity of a group 13 element ' E ' is same as that of Ge (on Pauling scale and up to one decimal point). The CORRECT statements about E3+E^{3 +} are (A) It can act as a reducing agent. (B) It can act as an oxidizing agent. (C) E3+E^{3 +} is more stable than E+E^{+}. (D) The standard electrode potential value for E3+/EE^{3 +}/E is positive. Choose the correct answer from the options given below

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  6. Question 6

    6 Apr 2026 S1

    34
    Given below are two statements : Statement-I : Aluminum is more electropositive than thallium as the standard electrode potential value of EAl3+/AloE_{{Al}^{3 +}/Al}^{o} is negative and ETl3+/TloE_{{Tl}^{3 +}/Tl}^{o} is positive. Statement-II : The sum of first three ionization enthalpies of boron is very high when compared to that of aluminum. Due to this reason boron forms covalent compounds only and aluminium forms Al3+{Al}^{3 +} ion. In the light of the above statements, choose the correct answer from the options given below.

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