Question:
Which from following compounds has lowest thermal stability?
Which from following compounds has lowest thermal stability?
Show Hint
Stability falls as the bond becomes longer and weaker; IBr has the largest, weakest bond.
Updated On: Oct 1, 2026
- \(\text{IBr}\)
- \(\text{BrCl}\)
- \(\text{BrF}\)
- \(\text{ClF}\)
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept
Thermal stability of an interhalogen XX' depends on the strength of the X-X' bond. Bond strength decreases as the difference in size from the bonded atoms leads to poorer overlap and as the atoms get larger.
Step 2: Detailed Explanation
ClF, BrF and BrCl contain smaller halogens, giving shorter bonds. In IBr, the large iodine atom makes a longer bond with poor overlap, so the bond is the weakest.
The weakest bond breaks most easily on heating, so IBr is the least stable.
Final Answer:
IBr has the lowest thermal stability, option (A). \[ \boxed{\text{IBr (A)}} \]
Thermal stability of an interhalogen XX' depends on the strength of the X-X' bond. Bond strength decreases as the difference in size from the bonded atoms leads to poorer overlap and as the atoms get larger.
Step 2: Detailed Explanation
ClF, BrF and BrCl contain smaller halogens, giving shorter bonds. In IBr, the large iodine atom makes a longer bond with poor overlap, so the bond is the weakest.
The weakest bond breaks most easily on heating, so IBr is the least stable.
Final Answer:
IBr has the lowest thermal stability, option (A). \[ \boxed{\text{IBr (A)}} \]
Was this answer helpful?
0
0
Top MHT CET Chemistry Questions
- The temperature of $32^{\circ}C$ is equivalent to
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
- If a metal crystallises in bcc structure with edge length of unit cell $4.29 \times 10^{-8}\, cm$ the radius of metal atom is
- Which of the following oxides can act both as an oxidising agent as well as reducing agent ?
- "The mass and energy both are conserved in an isolated system", is the statement of
View More Questions
Top MHT CET Group 17 Elements Questions
- Which of the following halogens has the highest electronegativity?
- Which of the following halogens does always show oxidation state -1 ?
- Identify false statement from the following about fluorine.
- Which of the following halogens does always show oxidation state -1 ?
- Which of the following halogens does always show oxidation state -1 ?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions