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Question

Assertion:


In the periodic table, the atomic radius increases from left to right.
Reason:

The number of protons is increasing from left to right.

A

Both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
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B
Both Assertion and Reason are true, but Reason is not the correct explanation of the Assertion.
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C
Assertion is true, but the Reason is false.
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D
Assertion is false, but the Reason is true.
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E
Both assertion and reason is incorrect
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Solution

The correct option is D Assertion is false, but the Reason is true.
In the periodic table, the atomic radius decreases from left to right.

The number of protons (the number of electrons and the atomic number) is increasing from left to right.

However, the effective nuclear charge increases as the screening effect are not proper.

Thus, Assertion is false, but the Reason is true.

Hence, the correct option is D

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