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NEET2011ChemistryClassification of Elements and Periodicity in PropertiesActual

What is the value of electron gain enthalpy of Na ⁺ if IE ₁ of Na =5.1 eV ?

Options

  1. A-5.1 eV
  2. B-10.2 eV
  3. C+2.55 eV
  4. D+10.2 eV

Correct answer

A. -5.1 eV

Step-by-step solution

IE ₁ of Na =- Electron gain enthalpy of Na ⁺ ion =-5.1 eV .

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