The d-And-f-Block Elements

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Compare qualitatively the first and second ionisation potentials of copper and zinc. Explain the above observation.

Electronic configuration of copper is [Kr] 3d10 4s1 and electronic configuration of zinc is [Kr] 3d10 4s2 .
On the basis of Cu and Zn. The first ionization potential of zinc is higehr than Cu.
Because in the zinc electron is removed form 4s2 configuration (which is in stable state) while in copper it is removed form 4s1 configuration thus more energy is required for the removal of 4s2 electron than that of 4s1.

While in second ionization potential of copper is higher than that of zinc because Cu+ has 3d10 configuration (stable) in comparsion of 3d10 4s1of Zn+.

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