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What is the Zeff of an electron in the 3d7 orbital of co2+
Accepted Answer
The effective nuclear charge (Zeff) for an electron in the 3d7 orbital of Co2+ is approximately 7.4. This value is calculated by subtracting the shielding effect of inner electrons from the actual nuclear charge of cobalt. In Co2+, the cobalt atom has lost two electrons, resulting in a +2 charge. The electronic configuration of Co2+ is [Ar]3d7. The 3d electrons experience shielding from the inner core electrons (1s2, 2s2, 2p6) and from the other 3d electrons. The Zeff value indicates that the 3d electrons in Co2+ experience a net attraction from the nucleus that is slightly less than the full +7 nuclear charge.
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