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Term symbol d7 configuration
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A d7 configuration refers to an electron configuration where there are 7 electrons in the d orbitals. The term symbol for a d7 configuration depends on the specific element and its oxidation state. Here's a breakdown:
Spin Multiplicity: For a d7 configuration, there are 4 unpaired electrons, resulting in a spin multiplicity of 2S+1 = 9.
Orbital Angular Momentum: The total orbital angular momentum (L) is determined by the sum of the individual orbital angular momenta of the d electrons. For a d7 configuration, the possible values of L are 3, 2, 1, and 0, corresponding to F, D, P, and S states, respectively.
Example: Consider a transition metal ion with a d7 configuration, like Cobalt(II) (Co2+). The ground state term symbol for Co2+ is 4F. This means it has a spin multiplicity of 4 (4 unpaired electrons), an L value of 3 (F state), and a total angular momentum J of 9/2 (calculated using Hund's rules).
To determine the specific term symbol for a d7 configuration, you need to consider the specific element and its oxidation state, as well as the Hund's rules for filling the d orbitals.
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