JEE Main Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main

The first ionization potentials of Cu, Ag and Au are 731, 745 and 890 kJ/mol (not in the same order). What is the numerical value of I.E. for Ag?

Answer: 731

Solution

Going from Ag to Au, 14 poorly-shielding electrons are added, increasing effective nuclear charge sharply, so Au has the highest IE

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Question ID VK-133874