AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which of the following statements is not correct?
- A From \(\mathrm{SO}_2\) to \(\mathrm{TeO}_2\) reducing power decreases
- B The order of boiling points of hydrides of \(16^{\text {th }}\) group elements is \(\mathrm{H}_2 \mathrm{~S} < \mathrm{H}_2 \mathrm{Se} < \mathrm{H}_2 \mathrm{Te} < \mathrm{H}_2 \mathrm{O}\)
- C Rhombic sulphur has \(S_8\) molecules while monoclinic sulphur has \(S_6\) molecules.
- D The bond angle in ozone molecule is \(117^{\circ}\).
Answer & Solution
Correct Answer
(C) Rhombic sulphur has \(S_8\) molecules while monoclinic sulphur has \(S_6\) molecules.
Step-by-step Solution
Detailed explanation
(a) Reducing power decreases from \(\mathrm{SO}_2\) to \(\mathrm{TeO}_2\) on moving down the group. (b) Order of boiling point of hydrides of 16th group elements are \(\mathrm{H}_2 \mathrm{~S} Thus, option (c) is incorrect.
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