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[1] [3] 1. (a) State the Pauli Exclusion Principle (PEP) as it applies to electrons in an atom. (b) Explain how the PEP
Posted: Tue May 17, 2022 8:56 pm
by answerhappygod
- 1 3 1 A State The Pauli Exclusion Principle Pep As It Applies To Electrons In An Atom B Explain How The Pep 1 (95.25 KiB) Viewed 78 times
[1] [3] 1. (a) State the Pauli Exclusion Principle (PEP) as it applies to electrons in an atom. (b) Explain how the PEP underpins the quantum mechanical description of the electron energy levels in the Helium atom. State the four quantum numbers for each of the electrons in the Helium ground state. (c) Calculate the term symbols for the excited helium state of 1s2p. Which of these term symbols represent singlet states, and which triplet states? (d) List the four transition rules for a multi-electron atom. (e) Sketch the Grotrian diagram for Helium up to the n = 3 level (no need to include fine structure splitting), with one electron in the 1s state, and the other in an excited state. Draw arrows on your diagram to illustrate the allowed transitions. Only transitions down to the lower shells need be considered (f) Why are triplet transitions generally not seen in absorption spectroscopy for Helium? [6] [2] [7] [1]