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NEETChemistryd and f Block Elements

What is the reason behind the trend of less negative Eo values for M2+/M?

Options

  1. AIncrease in the sum of the first and second ionization energies
  2. BDecrease in the sum of the first and second ionization energies
  3. CIncrease in atomic size
  4. DDecrease in atomic size

Correct answer

A. Increase in the sum of the first and second ionization energies

Step-by-step solution

The trend of less negative Eo values for M2+/M is related to the increase in the sum of the first and second ionization enthalpies.

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