Select which of the following is incorrect order of I.E. ?
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a
Cu > Ag > Au
b
Cu < Zn > Ga
c
Hg > Zn > Cd
d
Tl > Ga > In
answer is A.
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Detailed Solution
CuAgAu3d104s13d105s14f145d106s1In Au, poor screening is provided by 4f subshell e-.∴Zeff increases and ionization energy also increases.∴Au > Cu > Ag is correct order.