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Compare qualitatively the first and second ionization potantials of copper and zinc. Explain the observation.

Compare qualitatively the first and second ionization potantials of copper and zinc. Explain the observation.

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
6 years ago
29Cu = 1s2, 2s2 2p6, 3s23p63d10, 4s1
30Zn = 1s2, 2s2 2p6, 3s23p63d10, 4s2
On the basis of configuration of Cu and Zn, first ionization potential of Zn is greater than that of copper because in zinc the electron is removed from 4s2 configuration while in copper it is removed from 4s1 configuration. So more amount of energy is required for the removal of electron of 4s2 (completely filled orbital) than that of 4s1 while the second ionization potential of Cu is higher than that of zinc because Cu+ has 3d10 (stable configuration) in comparison to Zn+ (4s1 configuration).

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