Assertion : $C s$ and $F_{2}$ reacts violently. Reason: $C s$ is most electropositive and $F_{2}$ is most electronegative.

Read the above assertion and reason and choose the correct option regarding it.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
$C s$ and $F_{2}$ reacts violently.

$C s$ is most electropositive metal and $F_{2}$ is most electronegative in non-metals. They react at very fast rate and the bond is strictly ionic.

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