Question
Question: Which of the following sequence regarding the first ionization potential of coinage metal is correct...
Which of the following sequence regarding the first ionization potential of coinage metal is correct?
A
Cu > Ag > Au
B
Cu < Ag < Au
C
Cu > Ag < Au
D
Ag > Cu < Au
Answer
Cu > Ag < Au
Explanation
Solution
Atomic sizes of Ag and Au are closer to each other but nuclear charge is more on Au. (Au : 889, Cu : 745, Ag : 731 kJ mol–1)