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Compare qualitatively the first and seco...

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

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`IE_1 Zn gt Cu , IE_2 Cu gt Zn, Zn = 3d^(10) 4s^(2) , Cu =3d^(10) 4s^(1) `
The first ionization energy is greater for Zn but reverse true for 2nd ionization energy.
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