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]
The structural formula of beryllium hydride is shown.
H-Be-H
Which diagram best illustrates the valence electron configuration of the beryllium atom after hybridization?
 
A.
B.
C.
D.
参考答案: B
本题详细解析:
The beryllium atom in $BeH_2$ is sp hybridized, with two sp orbitals of equal energy and two higher energy p orbitals. Each sp orbital contains an unpaired electron, while the two p orbitals are unoccupied. The sp orbitals are positioned at 180°, producing a linear geometry, while the p orbitals are perpendicular to each other and to the Be-H bonds.
This question is very hard as it requires the student to determine the hybridization of an unfamiliar molecule and correctly recall the orbital energy diagram.
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