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STD 11 - 3. Classification of elements and periodicity in properties — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
Question
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:

✓

Answer

c
First ionisation energy increases along the period. Along the period $\mathrm{Z}$ increases which outweighs the shielding effect

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