Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Dipole-dipole interactions are the only non-covalent interactions, resulting in hydrogen bond formation.
Reason R : Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical.
In the light of the above statements, choose the most appropriate answer from the options given below.

Options

A. A is false but R is true
B. Both A and R are true and R is the correct explanation of A
C. A is true R is false
D. Both A and R are true but R is NOT the correct explanation of A

Answer

To solve the question, we need to analyze both the Assertion (A) and the Reason (R) provided.

### Step 1: Analyze the Assertion (A)
**Assertion A:** "Dipole-dipole interactions are the only non-covalent interactions, resulting in hydrogen bond formation."

- This statement is incorrect. While dipole-dipole interactions are indeed a type of non-covalent interaction, they are not the only type that can lead to hydrogen bonding. Other interactions, such as hydrogen bonding itself, which is a specific type of dipole-dipole interaction, also contribute to the formation of hydrogen bonds. Therefore, the assertion is false.

### Step 2: Analyze the Reason (R)
**Reason R:** "Fluorine is the most electronegative element and hydrogen bonds in HF are symmetrical."

- This statement is partially correct. Fluorine is indeed the most electronegative element, and it forms strong hydrogen bonds with hydrogen. However, the claim that hydrogen bonds in HF are symmetrical is misleading. In reality, hydrogen bonds are generally considered to be polar and asymmetrical due to the significant electronegativity difference between hydrogen and fluorine. Thus, this reason can also be deemed incorrect.

### Step 3: Conclusion
Both the Assertion (A) and the Reason (R) are incorrect. Therefore, the correct answer to the question would be that neither A nor R is true.

### Final Answer
- Both Assertion A and Reason R are incorrect.

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