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JEE Main Chemistry question

ChemistryClassification of Elements and Periodicity in PropertiesJEE Main

One mole of magnesium in the vapour state absorbed 1200 kJmol⁻¹ of energy. If the first and second ionisation energies of Mg are 750 and 1450 kJmol⁻¹ respectively, the final composition of the mixture is [Kerala CEE 2006]

Answer: (B)

Solution

Converting all 1 mole of Mg to uses kJ, leaving kJ available for the second ionisation step (750 kJ needed for IE1 of 1 mole is less than the total 1200 kJ supplied, so IE1 is completed for the

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Question ID VK-133192