MCQ
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:
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:
- ABoth A and R are true and R is the correct explanation of A
- B) A is true but R is false
- ✓A is false but R is true
- DBoth A and R are true but R is NOT the correct explanation of A