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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

and of Mg are 178 and 348 kcal . The energy required for the reaction is

Answer: (B)

Solution

Removing two electrons successively from an atom requires the sum of the first and second ionisation energies: $ + = 178 + 348 =

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Question ID VK-133462