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NEETChemistryClassification of Elements and Periodicity in Properties

What factor causes the increase in ionization enthalpy as you move across a period in the periodic table?

Options

  1. AIncreased atomic size.
  2. BDecreased nuclear charge.
  3. Cincrease in effective nuclear charge
  4. DDecreased shielding.

Correct answer

C. increase in effective nuclear charge

Step-by-step solution

As you move across a period, increased electron-electron repulsion contributes to the increase in ionization enthalpy.

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