The correct answer is; Carbon atoms can form chains and branches with each other, and other atoms can attach to these.
Organic chemistry is regarded as the chemistry of carbon compounds and carbon atoms are known to catenate.
Organic chemistry is the branch of chemistry that studies carbon compounds. There are thousands of organic compounds in existence.
The common thread that joins all these organic compounds is that they all contain a long or branched chain of carbon atoms linked to each other. This ability of carbon atoms to self-link forming long chains or branches or macrocyclic compounds is called catenation.
The long or branched chain of carbon is therefore the "back bone" or main framework of the compound.
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