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NEETChemistryClassification of Elements and Periodicity in Properties

What are the various factors due to which the ionisation enthalpy of the main group elements tends to decrease down a group?

Options

  1. AEffective nuclear charge decreases, atomic size increases, and shielding by inner electrons increases.
  2. BEffective nuclear charge increases, atomic size decreases, and shielding by inner electrons decreases.
  3. CEffective nuclear charge increases, atomic size increases, and shielding by inner electrons decreases.
  4. DEffective nuclear charge decreases, atomic size decreases, and shielding by inner electrons decreases.

Correct answer

A. Effective nuclear charge decreases, atomic size increases, and shielding by inner electrons increases.

Step-by-step solution

Correct Option is : (A) Effective nuclear charge decreases, atomic size increases, and shielding by inner electrons increases.

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