TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Among the hydrides of group 16 elements, the hydriae \(\mathrm{X}\) has lowest boiling point and the hydride \(\mathrm{Y}\) has highest boiling point. \(\mathrm{X}\) and \(\mathrm{Y}\) respectively are
- A \(\mathrm{H}_2 \mathrm{Te}, \mathrm{H}_2 \mathrm{Se}\)
- B \(\mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{Te}\)
- C \(\mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{Te}\)
- D \(\mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{O}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{H}_2 \mathrm{~S}, \mathrm{H}_2 \mathrm{O}\)
Step-by-step Solution
Detailed explanation
On moving down the group from \(\mathrm{S}\) to \(\mathrm{Te}\), the boiling point of hydrides increases due to increase in van der wal force of attraction. But \(\mathrm{H}_2 \mathrm{O}\) has highest boiling point due to presence of hydrogen bonding. Hence, the increasing order…
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