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NEETChemistryClassification of Elements and Periodicity in Properties

How is the second ionization enthalpy defined?

Options

  1. AThe energy required to add a second electron to a gaseous atom.
  2. BThe energy required to remove the second most tightly bound electron from a gaseous ion.
  3. CThe energy required to convert an atom into a molecule.
  4. DThe energy required to remove the first electron from an atom.

Correct answer

B. The energy required to remove the second most tightly bound electron from a gaseous ion.

Step-by-step solution

The second ionization enthalpy as the energy required to remove the second most loosely bound electron from a gaseous ion.

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