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Which given d- or f-block ions are diamagnetic or paramagnetic

This type of question, asked 3 times: 2021 Paper 22, 30 Jan 2024, 2 Apr 2026 S2. All 3 questions below, oldest first.

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  1. Question 1

    2021 Paper 22

    37
    Which one of the following lanthanides exhibits +2 oxidation state with diamagnetic nature? (Given ZZ for Nd=60,Yb=70,La=57,Ce=58Nd = 60,Yb = 70,La = 57,Ce = 58 )

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  2. Question 2

    30 Jan 2024

    36
    Diamagnetic Lanthanoid ions are:

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  3. Question 3

    2 Apr 2026 S2

    49
    Number of paramagnetic ions among the following d- and f-block metal ions is ____\_\_\_\_ . Mn2+,Cu2+,Zn2+,Yb2+,Sc3+,La3+,Gd3+,Lu3+,Ti4+{Mn}^{2 +},{Cu}^{2 +},{Zn}^{2 +},{Yb}^{2 +},{Sc}^{3 +},{La}^{3 +},{Gd}^{3 +},{Lu}^{3 +},{Ti}^{4 +}, Ce4+{Ce}^{4 +} (Atomic number of Mn=25,Cu=29,Zn=30Mn = 25,Cu = 29,Zn = 30, Yb=70,Sc=21,La=57,Gd=64,Lu=71Yb = 70,Sc = 21,La = 57,Gd = 64,Lu = 71, Ti=22,Ce=58Ti = 22,Ce = 58 )