Question

draw the shape of the three fundamental structures of carbon based molecules string chain rings and branched chain​

Answer 1

Answer: Three fundamental carbon based molecules are :

straight chain, branched chain and rings.

• Straight chain - these can be alkane, alkene and alkyne with no unsaturation, double bonds or triple bonds respectively.

1. Alkane : example, CH₃-CH₃(ethane)
2. Alkene : CH₂=CH₂ (ethene)
3. Alkyne : CH≡CH (ethyne)

• Branched chain - a carbon chain with side chain is present. Example, CH₃-CH(C₂H₅)-CH₂-CH₃ ⇒2-ethyl butane                                  

• Rings - these can further be cyclic, aromatic, non aromatic or anti aromatic rings. Example,

1. Cyclic : cyclopropane(C₃H₆) ,cyclobutane (C₄H₈)
2. Aromatic : benzene (C₆H₆)
3. Non-aromatic : 1,3-cyclopentdiene
4. Antiaromatic: 1,3-cyclobutdiene

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