Question

The incorrect order of first ionisation energy is:

• A. Au > Cu > Ag
• B. Pt > Ni > Pd
• C. C > Pb > Sn
• D. B > Ga > Al

Answer 1

Answer: (B)

First ionization energy of $\text{Pd}\text{>}\text{Ni}$ due to its ${\text{d}}^{\text{10}}$ configuration.