Top topic this week
Back to FAQs
Related FAQs
Frequently Asked Question
Questions asked by users might not always be phrased in the clearest way.
What is the ground state term for a d7 complex
Accepted Answer
The ground state term for a d7 complex is 4F. Here's how to determine it:
1. Determine the number of unpaired electrons: A d7 complex has 7 electrons in the d orbitals. These electrons will fill the orbitals according to Hund's rule, resulting in 3 unpaired electrons.
2. Calculate the total spin angular momentum (S): With 3 unpaired electrons, S = (3/2)
hbar.
3. Calculate the total orbital angular momentum (L): The d orbitals have an angular momentum quantum number (l) of 2. To determine L, we sum the l values of the unpaired electrons, considering the maximum possible value for each. For a d7 complex, this gives L = 2 + 2 + 2 = 6. Since L=6 corresponds to the F term symbol.
4. Combine S and L to obtain the term symbol: The term symbol is written as 2S+1LJ, where J is the total angular momentum, calculated as J = |L - S| to |L + S|. In this case, J can range from 3/2 to 9/2. The lowest energy state is when J is minimized, so J = 3/2.
Therefore, the ground state term for a d7 complex is 4F3/2.
Articles you might like