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NEET 2011 Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesNEET 2011

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

Answer: (1)

Solution

Electron gain by is the exact reverse of the first ionisation of Na: , eV e^-$ →

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Question ID VK-090673