Question Details

Statement 1 : Ionisation energy decreases in a period.

Statement 2 : In a period Z dominates over screening effect

Options

A

Both statements 1 and 2 are correct

B

Both statements 1 and 2 are incorrect

C

Statement 1 is correct and statement 2 is incorrect

D

Statement 1 is incorrect but statement 2 is correct

Correct Answer :

Statement 1 is incorrect but statement 2 is correct

Solution :

Ionisation enthalpy increases in a period. Z dominates over screening effect (σ) in a period as Zeff. increases.

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