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NEETChemistryd and f Block Elements

What is the approximate value of the second ionization enthalpy for lanthanoids?

Options

  1. A200 kJ mol–1
  2. B600 kJ mol–1
  3. C1000 kJ mol–1
  4. D1200 kJ mol–1

Correct answer

D. 1200 kJ mol–1

Step-by-step solution

The second ionization enthalpies of lanthanoids are about 1200 kJ mol–1.

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