TS EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Assertion (A) : The bond dissociation energy increases from to and then decreases to Reason (R) : The low bond energy of fluorine is due to the repulsion between the lone pairs of electrons in two fluorine atoms.
The correct option among the following is
- A (A) is true, (R) is true and (R) is the correct explanation for (A)
- B (A) is true, (R) is true but (R) is not the correct explanation for (A)
- C (A) is true but (R) is false
- D (A) is false but (R) is true
Answer & Solution
Correct Answer
(A) (A) is true, (R) is true and (R) is the correct explanation for (A)
Step-by-step Solution
Detailed explanation
Bond dissociation energy of F2 molecule is less than that of Cl2 molecule because F has smaller radius and due to smaller size repulsion is high. Both have 3 lone pairs but in the case of chlorine the lone pairs have more space to be in, leading to a lower stress on the bond. In…
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