Models of Bonding & Structure B.2 The Covalent Model (id: 84d5d5116)

本题目来源于试卷: Models of Bonding & Structure B.2 The Covalent Model，类别为 IB化学

[问答题]
Hydrogen cyanide consists of a carbon atom bonded to one hydrogen atom and one nitrogen atom.

1.Draw the Lewis structure of hydrogen cyanide.
2.The valence electron configuration of the carbon atom before hybridization is shown.

Hybridization produces a new configuration of valence orbitals, each containing one unpaired electron.
Draw a similar diagram illustrating the valence electron configuration of the carbon atom after hybridization, including labels for the valence orbitals.
3.Hydrogen cyanide contains both σ and π bonds.
1.State the type of bond formed by the hybrid orbitals of the carbon atom.
2.Explain how the π bonding in hydrogen cyanide is produced by the overlap of valence orbitals.

参考答案:

1. All bonds correct; $\mathrm{✓}$
   Non-bonding electrons of N atom included; 
2. One pair of orbitals of equal high energy AND one pair of orbitals of equal low energy
   High-energy orbitals labelled as p (orbitals)
   Low-energy orbitals labelled as sp (orbitals)
3. 1.σ
   Sideways / side-on / lateral overlap of p orbitals (on the nitrogen and carbon atoms)

本题详细解析:

微信扫一扫，分享更方便