NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 13 & 14)
NTA Abhyas 2020 · Chemistry · p Block Elements (Group 13 & 14)
Which of the following is the correct order of stability of...
Which of the following is the correct order of stability of allotropes of carbon ?
Options
- ADiamond < graphite < fullerene
- BFullerene < graphite < diamond
- CGraphite < fullerene < diamond
- DFullerene < diamond < graphite
Correct answer
D. Fullerene < diamond < graphite
Step-by-step solution
This problem is based on the stability of allotropes of carbon. Use the physical properties of allotropes of carbon. Use enthalpy of formation to solve the problem..
We know diamond is the hardest known material that's why many students get confused that diamond is the most stable material but this is wrong. The most stable allotrope of carbon is graphite.
The fullerene is least stable among these three is due to strained molecule. Graphite has maximum stability due to high negative value of enthalpy of formation.
We know diamond is the hardest known material that's why many students get confused that diamond is the most stable material but this is wrong. The most stable allotrope of carbon is graphite.
The fullerene is least stable among these three is due to strained molecule. Graphite has maximum stability due to high negative value of enthalpy of formation.