How Do Inorganic Students Represent Molecular Orbitals? A Multi-Institutional Study from the Foundation-Level Inorganic Chemistry Course
How Do Inorganic Students Represent Molecular Orbitals? A Multi-Institutional Study from the Foundation-Level Inorganic Chemistry Course
复制标题
无机学生如何表示分子轨道?
DOI:
10.1021/acs.jchemed.3c00823
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发表时间:
2024
影响因子:
3
通讯作者:
Lin, Shirley
中科院分区:
文献类型:
--
作者:
Reisner, Barbara A.;Kinkaid, Melissa M.;Pratt, Justin M.;Bentley, Anne K.;Stewart, Joanne L.;Smith, Sheila R.;Raker, Jeffrey R.;Lin, Shirley
This investigation of student and instructor representations of molecular orbitals (MOs) uses the knowledge from a community of practice to build collective pedagogical content knowledge of student understanding of molecular orbital representations in the foundation-level inorganic chemistry course. Participants were asked to sketch the bonding and antibonding MOs of a lithium hydride molecule. The student-generated images of MOs were analyzed and characterized according to five criteria: the atomic orbitals chosen, the sign of the wavefunction, the relative contribution of the atomic orbitals to the molecular orbitals, the overlap of atomic orbitals, and the shape of the MOs. While most students correctly chose a basis set and accurately represented the sign of the wavefunction for the MOs, they were less successful at sketching the relative contribution of the atomic orbitals to the molecular orbitals, the overlap of atomic orbitals, and the shape of the MOs. Students have an incomplete understanding of the information encoded in MO sketches and may not attribute meaning to these pictures in the same way that instructors may. These results suggest that instructors need to help students develop representational competence in order to achieve a more expert-like understanding of MO representations and to connect these depictions to the properties of molecules.
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影响因子:
2.3
作者:
R. Baltieri;A. Bego;M. Cebim
通讯作者:
M. Cebim
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
E. Sanchez;H. Garcia;S. R. Acuña
通讯作者:
S. R. Acuña
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
Daniel C. Southam;J. Lewis
通讯作者:
J. Lewis
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Anna Bergqvist;Shu
通讯作者:
Shu
影响因子:
4.6
作者:
M. Stieff
通讯作者:
M. Stieff