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JEE Main Chemistry Class 11 Classification of Elements and Periodicity in Properties 2 Questions

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Question : 16

Total: 36

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The first ionisation enthalpy decreases across a period.
Reason R: The increasing nuclear charge outweighs the shielding across the period.
In the light of the above statements, choose the most appropriate from the options given below:

[29-Jan-2024 Shift 1]

Both A and R are true and R is the correct explanation of A
A is true but R is false
A is false but R is true
Both A and R are true but R is NOT the correct explanation of A

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