Assertion :Ionisation potential of the element increases across a period. Reason: Left side columns of the periodic table have metals while right columns have non-metals so in general as we move from left to right ionisation potential increases.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Ionization potential of element increases across a period.
The left side columns of the periodic tables have metals whereas on right have non metals.
Thus Assertion is true and so is the reason but it does not explain assertion

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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
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(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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