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In the following questions a statement o...

In the following questions a statement of assertion (A) is followed by a statement of reason ( R)
A : F is most electronegative element of periodic table.
R : CI is having highest electron affinity.

A

If Both Assertion & Reason are true and the reason is the correct explanation of the assertion then mark (1) .

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion then mark (2)

C

If Assertion is true statement but Reason is false then mark (3)

D

If both Assertion and Reason are false statements then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason statements, we will analyze each statement step by step. ### Step 1: Analyze the Assertion (A) **Assertion (A):** Fluorine (F) is the most electronegative element of the periodic table. - **Definition of Electronegativity:** Electronegativity is a measure of an atom's ability to attract and hold onto electrons in a chemical bond. - **Trend in Electronegativity:** Electronegativity increases across a period (from left to right) and decreases down a group (from top to bottom). - **Conclusion for Assertion:** Since fluorine is located at the top right of the periodic table (excluding noble gases), it has the highest electronegativity, which is approximately 4.0. Therefore, the assertion is **true**. ### Step 2: Analyze the Reason (R) **Reason (R):** Chlorine (Cl) has the highest electron affinity. - **Definition of Electron Affinity:** Electron affinity is the amount of energy released when an electron is added to a neutral atom. - **Trend in Electron Affinity:** Electron affinity generally increases across a period and decreases down a group. - **Comparison of Fluorine and Chlorine:** Although fluorine has high electronegativity, it does not have the highest electron affinity due to its small atomic size, which leads to less space for accommodating an additional electron. Chlorine, being larger, can accommodate an additional electron more easily, thus it has a higher electron affinity than fluorine. - **Conclusion for Reason:** The statement that chlorine has the highest electron affinity is **true**, but it does not explain why fluorine is the most electronegative element. ### Step 3: Conclusion Both the assertion and the reason are true statements, but the reason does not correctly explain the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion. ### Final Answer The correct option is: **Both assertion and reason are true, but the reason is not the correct explanation of the assertion.** ---
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