本题目来源于试卷: Models of Bonding & Structure B.2 The Covalent Model，类别为 IB化学
[单选题]
A carbon atom is $sp^2$ hybridized.
Which diagram best illustrates the valence electron configuration of this carbon atom?
A.
B.
C.
D.
参考答案: C
本题详细解析:
In an $sp^2$ carbon atom, there are three $sp^2$ orbitals of equal energy and one p orbital of higher energy.
The formation of three σ bonds and one π bond can be understood as being derived from three $sp^2$ orbitals and one p orbital, respectively, each containing an unpaired electron.
This question is moderately difficult: although the orbital energies of an $sp^2$ carbon atom is covered explicitly in the syllabus, the student must recognize this distribution without the aid of orbital labels or additional diagrams.
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