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NEETChemistryd and f Block Elements

What is the reason behind the trend of increasing values of second ionization enthalpy as the effective nuclear charge increases?

Options

  1. ADecrease in the number of d electrons
  2. BIncrease in the number of s electrons
  3. CLoss of exchange energy
  4. DIncrease in the number of p electrons

Correct answer

C. Loss of exchange energy

Step-by-step solution

The trend of increasing values of second ionization enthalpy as the effective nuclear charge increases is due to the loss of exchange energy.

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