Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

Aluminium is usually found in +3 oxidation stage. In contrasts, thallium exists in +1 and +3 oxidation states. This is due to :

  1. A

    lanthanoid contraction

  2. B

    lattice effect

  3. C

    diagonal relationship

  4. D

    inert pair effect

Solution

+1 is more stable form of Thallium due to inert pair effect. For Tl +1 > +3 oxidation state.

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