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Periodic Table and Periodicity question

2019 · 9 Jan · Shift 1 · Q19
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Periodic Table and Periodicity question

2019 · 9 Jan · Shift 1 · Q19

JEE MainChemistryPeriodic Table and PeriodicityMCQ+4 / −1
Aluminium is usually found in +3 oxidation state. In contrast, thallium exists in + 1 and + 3 oxidation states. This is due to :
  1. A
    inert pair effect
  2. B
    diagonal relationship
  3. C
    lattice structure
  4. D
    lanthanoid contraction
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