Question

write the structures of alkenes, ethene and propene. What are they called?
(1) Draw the structures of (1) diamond (ii) graphite.
(c) What are hydrocarbons ? Write the structures of hydrocarbons with two carbon atoms
containing (1) carbon-carbon single bond (in) carbon-carbon double bond (ii) carbon carbon
triple bond.
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Answer 1

Answer:

As noted before, alkenes are hydrocarbons with carbon-to-carbon double bonds (R2C=CR2) and alkynes are hydrocarbons with carbon-to-carbon triple bonds (R–C≡C–R). Collectively, they are called unsaturated hydrocarbons because they have fewer hydrogen atoms than does an alkane with the same number of carbon atoms, as is indicated in the following general formulas