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What is the Zeff of an electron in the 3d orbital of co2+
Accepted Answer
The effective nuclear charge (Zeff) for an electron in the 3d orbital of Co²⁺ is approximately 15.2. This value is calculated by subtracting the shielding effect of the inner electrons from the total nuclear charge. The shielding effect arises from the repulsion between the 3d electron and the inner electrons (1s², 2s², 2p⁶, 3s², 3p⁶). The Zeff for the 3d electrons in Co²⁺ is greater than the Zeff for the 3d electrons in neutral cobalt (Co) because the Co²⁺ ion has lost two electrons, resulting in a stronger attraction between the nucleus and the remaining electrons.
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