When drawing Lewis dot structures, what should you do if you run out of electrons before all atoms are satisfied?

Leave it as is.

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Try double or triple bonds.

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Make a resonance structure.

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Add the missing electrons.

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Solution

The correct option is B Try double or triple bonds.
When drawing Lewis dot structures, you should try double or triple bonds if you run out of electrons before all atoms are satisfied.

An example is the HCN molecule. There is a total of 10 valence electrons. H has completed duplet and N has completed octet. But C is electron deficient. Hence, a triple bond between C and N is suggested.

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The number of electrons in a Lewis dot structure of each bonded atom should always sum up to:

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