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Question 4.6: Drawing an Electron-Dot Structure for HCN Draw an electron-d......

Drawing an Electron-Dot Structure for HCN

Draw an electron-dot structure for the deadly gas hydrogen cyanide, HCN.

STRATEGY

First, connect the carbon and nitrogen atoms. The only way the carbon can form four bonds and the nitrogen can form three bonds is if there is a carbon–nitrogen triple bond.

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\left.\begin{array}{c}\mathrm{H} \cdot \\\\\cdot \overset{.}{\underset{⋅ }{C}} \cdot \\\\\cdot \dot{\underset{..}{N}} \cdot\end{array}\right\} \rightrightarrows H:C:::N: \ \ \ \ or \ \ \ H-C\equiv N:

Hydrogen cyanide, HCN

worked example 4.6

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