Molecules containing double bonds [Higher tier only]

Some molecules contain a double or triple bond. This type of bond occurs when more than one pair of electrons are shared between the atoms to attain a full outer shell (double bond – 2 pairs of electrons, triple bond – 3 pairs of electrons).

An example is carbon dioxide.

One carbon atom with four cross electrons, and two oxygen atoms with six dot electrons.

1. One carbon atom with four cross electrons, and two oxygen atoms with six dot electrons

This can be represented as 0=C=0.

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