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AP EAMCET202120 Aug 2021Morning ShiftChemistryd and f Block ElementsActual

Which of the following statements is incorrect?

Options

  1. AT l 3 + salts are oxidizing agents.
  2. BGa + salts are reducing agents.
  3. CPb 4 + salts are better oxidizing agents.
  4. DAs + 5 salts are better oxidizing agents.

Correct answer

D. As + 5 salts are better oxidizing agents.

Step-by-step solution

According to the inert pair effect, stability of lower oxidation state is more dominant than that of stability of higher oxidation state, so Tl + is more stable than Tl 3 + . Therefore, Tl 3 + salts are are better oxidising agents. In case of gallium, Ga 3 + is more stable oxidation state than Ga + so   Ga + salts are better reducing agents In case of lead, Pb 2 + is more stable than Pb 4 + due to inert pair effect therefore Pb 4 + salts are better oxidising agents. In case of Arsenic, higher oxidation state i

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