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TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Identify the correct orders from the following with respect to the property associated with A. \(\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3-\) Bond Angle B. \(\mathrm{NH}_3>\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3\) - Basic Character C. \(\mathrm{PH}_3>\mathrm{AsH}_3>\mathrm{SbH}_3>\mathrm{NH}_3\) - Thermal stability D. \(\mathrm{SbH}_3>\mathrm{NH}_3>\mathrm{AsH}_3>\mathrm{PH}_3\) - Boiling point

  1. A A, B \& C only
  2. B A, C \& D only
  3. C B, C \& D only
  4. D A, B \& D only
Verified Solution

Answer & Solution

Correct Answer

(D) A, B \& D only

Step-by-step Solution

Detailed explanation

The order in 'A' is correct as the bond pair- bond pair repulsion increases of the central atom that decreases the bond angle. The order is ' \(\mathrm{B}\) ' is correct as the size of the orbital increases down the group because of which the lone pair accommodation becomes…