Answer
Verified
437.1k+ views
Hint: The bond dissociation energy is defined as the amount of energy required to break the chemical bond formed between the two atoms in a chemical compound. The compound which forms a stable intermediate will be strong and high energy will be required to break the bond.
Complete step by step answer:
The covalent bond present between the two atoms is broken by two ways. It can be done either by heterolytic cleavage or by homolytic cleavage.
In homolytic cleavage, the product formed are radicals and the energy required for breaking the covalent bond is known as bond dissociation energy.
The homolytic bond dissociation energy is defined as the amount of energy required to break one mole of gases which are covalently bonded into radical pairs. The SI unit of bond dissociation energy is kJ/mol.
In the given compound, there are four hydrogen atoms bonded to carbon atoms by a covalent bond. But the C-H bond present at first position forms a stable intermediate by resonance formed by the radical due to the presence of methyl group which shows positive inductive effect, the double bond and the hyperconjugation due to five hydrogen atoms present in the ring.
Therefore, the C-H bond at (I) position requires minimum bond-dissociation energy to break the bond.
So, the correct answer is Option A.
Note: On comparing the primary C-H bond, secondary C-H Bond and tertiary C-H bond, the tertiary C-H bond requires less bond dissociation energy.
Complete step by step answer:
The covalent bond present between the two atoms is broken by two ways. It can be done either by heterolytic cleavage or by homolytic cleavage.
In homolytic cleavage, the product formed are radicals and the energy required for breaking the covalent bond is known as bond dissociation energy.
The homolytic bond dissociation energy is defined as the amount of energy required to break one mole of gases which are covalently bonded into radical pairs. The SI unit of bond dissociation energy is kJ/mol.
In the given compound, there are four hydrogen atoms bonded to carbon atoms by a covalent bond. But the C-H bond present at first position forms a stable intermediate by resonance formed by the radical due to the presence of methyl group which shows positive inductive effect, the double bond and the hyperconjugation due to five hydrogen atoms present in the ring.
Therefore, the C-H bond at (I) position requires minimum bond-dissociation energy to break the bond.
So, the correct answer is Option A.
Note: On comparing the primary C-H bond, secondary C-H Bond and tertiary C-H bond, the tertiary C-H bond requires less bond dissociation energy.
Recently Updated Pages
what is the correct chronological order of the following class 10 social science CBSE
Which of the following was not the actual cause for class 10 social science CBSE
Which of the following statements is not correct A class 10 social science CBSE
Which of the following leaders was not present in the class 10 social science CBSE
Garampani Sanctuary is located at A Diphu Assam B Gangtok class 10 social science CBSE
Which one of the following places is not covered by class 10 social science CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
How do you graph the function fx 4x class 9 maths CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE
Differentiate between homogeneous and heterogeneous class 12 chemistry CBSE