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NEET 2009
Exam
NEET
Year
2009
Subject
Chemistry
Chapter
Classification of Elements and Periodicity in Properties

NEET 2009 · Chemistry · Classification of Elements and Periodicity in Properties

The stability of +1 oxidation state increases in the sequence :

The stability of +1 oxidation state increases in the sequence :

Options

  1. AGa<\mathrm{Ga} < In <Al<Tl< \mathrm{Al} < \mathrm{Tl}
  2. BAl<Ga<In<Tl\mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{Tl}
  3. CTl<\mathrm{Tl} < In <Ga<Al< \mathrm{Ga} < \mathrm{Al}
  4. DIn <Tl<Ga<Al< \mathrm{Tl} < \mathrm{Ga} < \mathrm{Al}

Correct answer

B. Al<Ga<In<Tl\mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{Tl}

Step-by-step solution

+I+\mathrm{I} stability down the group increase due to inert pair effect Al\mathrm{Al}< Ga\mathrm{Ga}< In\mathrm{In}< Tl\mathrm{Tl}
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