Question

Determine the term symbols associated with a two electron configuration equation

where equation. Write the term symbols in order of increasing energy using Hund’s rules.

21 Apr 2025
Answer :
Word Count : 454

In atomic and molecular physics, the term symbol of an electron configuration is a representation of the quantum state of the system. The term symbol for a two-electron configuration takes into account the total spin quantum number (S), the total orbital angular momentum (L), and the total angular momentum (J).

For a two-electron configuration, the quantum numbers can be calculated using Hund's rules:

1. Rule 1: The term with the highest multiplicity (2S + 1) lies lowest in energy.
2. Rule 2: For terms with the same multiplicity, the term with the highest value of L lies lowest in energy.
3. Rule 3: For terms with the same multiplicity and L, ___ ______ __________ ______ ________ _________ ____ __________ ______ _____ __________.
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