AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Identify the correct statements from the following.
(i) Oxygen shows \(-2,-1,+1\) and +2 oxidation states.
(ii) The thermal stability of \(\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{Se}\) and \(\mathrm{H}_2 \mathrm{~S}\) follows the order \(\mathrm{H}_2 \mathrm{O} < \mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2\) Se.
(iii) The reducing nature of \(\mathrm{H}_2 \mathrm{Se}, \mathrm{H}_2 \mathrm{~S}\) and \(\mathrm{H}_2 \mathrm{Te}\) follows the order \(\mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2 \mathrm{Se} < \mathrm{H}_2 \mathrm{Te}\)
- A i, ii, iii
- B i, ii
- C i, iii
- D ii, iii
Answer & Solution
Correct Answer
(C) i, iii
Step-by-step Solution
Detailed explanation
Oxygen shows \(-2,-1,+1\) and +2 oxidation states. (i) Oxygen shows -2 oxidation states in most of its compound while it shows ( - 1) O.S. in peroxides (like \(\mathrm{H}_2 \mathrm{O}_2\) ), +1 in \(\mathrm{O}_2 \mathrm{~F}_2\) and +2 in \(\mathrm{OF}_2\). Thus, it show…
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