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NEETChemistryClassification of Elements and Periodicity in Properties

Explain why ionisation enthalpy decreases in a group from top to bottom.

Options

  1. ALarger atomic size leads to stronger electron-electron repulsions.
  2. BLower nuclear charge results in a stronger attraction for electrons.
  3. CPartially filled inner electron shell reduces affinity for additional electrons.
  4. DAtomic size increases and hence force of attraction towards the outermost electron decreases.

Correct answer

D. Atomic size increases and hence force of attraction towards the outermost electron decreases.

Step-by-step solution

Correct Option is : (D) Atomic size increases and hence force of attraction towards the outermost electron decreases.

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