Given below are two statements : one is labelled as Assertion … and the other is labelled as Reason … : Assertion A : The first ionisation enthalpy decreases across a period. Reason … : 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 :

Option A. First ionisation energy increases along the period. Along the period … increases which outweighs the shielding effect.

Alror

123days leftSign in

Periodic Table and Periodicity

JEE Main 2024 · 29 Jan, Morning shift · Q1621

ChemistryMedium127×since 2002Q1621

Given below are two statements : one is labelled as Assertion

\mathbf{A}

and the other is labelled as Reason

\mathbf{R}

: Assertion A : The first ionisation enthalpy decreases across a period. Reason

\mathbf{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 :

More on Periodic Table and Periodicity

Periodic Table and Periodicity — JEE Main 2024 · 29 Jan, Morning shift · Q1621 · Alror