Now consider an excited state of He atom with electron configuration 1s' 2s'. In general, the wavefunction is a state: (r, 0, 6, o2) = ¥(r,0, ¢)Vo, where V(r, 0, 6) and Vo, represent the spatial and the spin part. The spatial part is constructed from the wavefunctions of the 1s' and 2s' orbitals denoted as o (r, 0, 6) and o (r, 0, ), where subscript k denotes which electron it belongs to (i.e., k is either 1 or 2 since we have two electrons). • The spatial part of the wavefunction can be written o(r, 0, ¢)* (r, 0, ¢) + ¢}"(r, 0, ¢)&*° (r, 0, 4) V2(r, 0, ø) = *(r, 0, 6)3"(r, 0, 4) – 63 (r, 0, ø)oF*(r, 0, ¢) Vī2(r, 0, ¢) = Explain (and demonstrate) which spatial wavefunction (2(r,0, ) or V2(r, 0, 6)) is symmetric with respect to exchange of two electrons? Which one corresponds to the singlet and triplet state (defined by the spin multiplicity)? • Based on you response to the previous question, write down the wavefunction for the (i) ground state of He and the (ii) singlet excited state of He. Use spatial orbitals (r, 0, 6), (r, 0, ¢) and spin components of V,, denoted as (†, ) or (t, t).
Now consider an excited state of He atom with electron configuration 1s' 2s'. In general, the wavefunction is a state: (r, 0, 6, o2) = ¥(r,0, ¢)Vo, where V(r, 0, 6) and Vo, represent the spatial and the spin part. The spatial part is constructed from the wavefunctions of the 1s' and 2s' orbitals denoted as o (r, 0, 6) and o (r, 0, ), where subscript k denotes which electron it belongs to (i.e., k is either 1 or 2 since we have two electrons). • The spatial part of the wavefunction can be written o(r, 0, ¢)* (r, 0, ¢) + ¢}"(r, 0, ¢)&*° (r, 0, 4) V2(r, 0, ø) = *(r, 0, 6)3"(r, 0, 4) – 63 (r, 0, ø)oF*(r, 0, ¢) Vī2(r, 0, ¢) = Explain (and demonstrate) which spatial wavefunction (2(r,0, ) or V2(r, 0, 6)) is symmetric with respect to exchange of two electrons? Which one corresponds to the singlet and triplet state (defined by the spin multiplicity)? • Based on you response to the previous question, write down the wavefunction for the (i) ground state of He and the (ii) singlet excited state of He. Use spatial orbitals (r, 0, 6), (r, 0, ¢) and spin components of V,, denoted as (†, ) or (t, t).
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
Transcribed Image Text:Now consider an excited state of He atom with electron configuration 1s' 2s'. In general,
the wavefunction is a state:
V (r, 0, 6, 02) = V(r, 0, ø)Vo.
where V(r, 0, ø) and V, represent the spatial and the spin part. The spatial part is
constructed from the wavefunctions of the 1s' and 2s' orbitals denoted as o (r, 0, 6)
and ø (r, 0, 6), where subscript k denotes which electron it belongs to (i.e., k is either
1 or 2 since we have two electrons).
• The spatial part of the wavefunction can be written
1*(r, 0, 4)o3* (r, 0, 4) + o(r, 0, ¢)o²*(r, 0, 4)
V2
F (r, 0, 4)«3"(r, 0, ø) – 05" (r, 0, 4)o²°(r, 0, ø)
V2
V2(r, 0, 6) =
Vī2(r, 0, 6) =
Explain (and demonstrate) which spatial wavefunction (V2(r, 0, 0) or V2(r, 0, 0))
is symmetric with respect to exchange of two electrons? Which one corresponds to
the singlet and triplet state (defined by the spin multiplicity)?
• Based on you response to the previous question, write down the wavefunction for the
(i) ground state of He and the (ii) singlet excited state of He. Use spatial orbitals
(r, 0, 6), (r, 0, 6) and spin components of V, denoted as (†, 4) or (4, 1).
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