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-p-Block elements - I — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry-p-Block elements - I1 Mark
MCQ
The possible oxidation state of $Tl$ are
  • A
    $+1$ and $+2$
  • B
    $+2$ and $+3$
  • C
    $+1$ and $-1$
  • ✓
    $+1$ and $+3$
✓

Answer

Correct option: D.
$+1$ and $+3$
d
Tl shows both +1 and +3 oxidation states. The stability of +1 oxidation state increases down the group $\mathrm{T} 1>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}$ and +3 oxidation state is highly oxidising in character.

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