Classification Of Elements And Periodicity In Properties Question 6
Question 6 - 2024 (29 Jan Shift 1)
Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R:
The first ionisation enthalpy increases 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:
(1) Both $A$ and $R$ are true and $R$ is the correct explanation of $A$
(2) $A$ is true but $R$ is false
(3) A is false but $R$ is true
(4) Both A and R are true but R is NOT the correct explanation of A
Show Answer
Answer (3)
Solution
First ionisation energy increases along the period. Along the period $Z$ increases which outweighs the shielding effect
BETA
