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NTA Abhyas JEE Main2020ChemistryClassification of Elements and Periodicity in PropertiesPractice

The incorrect order of first ionisation energy is:

Options

  1. AAu > Cu > Ag
  2. BPt > Ni > Pd
  3. CC > Pb > Sn
  4. DB > Ga > Al

Correct answer

B. Pt > Ni > Pd

Step-by-step solution

First ionization energy of Pd   >   Ni due to its d 10 configuration.

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