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Hint: To answer this question we should be aware of alkene. Ethylene is widely used as a plant growth regulator that helps the process of senescence, ripening, and abscission in plants. It is marketed under the trade name serafin.
Complete Solution :
- Alkenes are the hydrocarbons with general formula ${{C}_{n}}{{H}_{2n}}$ where n is the number of carbon atoms. It is an unsaturated hydrocarbon as alkene contains c-c double bond in their molecules. Alkenes also known as Olefins where, Oleum means oil and fines means to care. The lower members of alkene form oily products on treating it with bromine or chlorine. They are produced by cracking of petroleum.
- The first member of the alkene series is ethylene, the number of carbon atoms in ethylene is 2.
General formula = ${{C}_{n}}{{H}_{2n}}$
n = 2 ( for ethylene)
Substituting n in general formula,
\[{{C}_{2}}{{H}_{4}}\]
- The chemical formula of ethylene is \[{{C}_{2}}{{H}_{4}}\].
- In ethylene the carbon atoms are of $s{{p}^{2}}$ hybridized . They are attached to each other by one $\sigma $ bond and a $\sigma $ bond. The $\sigma $ bond is obtained by the overlap of $s{{p}^{2}}$ hybrid orbital and the $\pi $ bond is obtained by the overlap of unhybridized p orbitals.
These two above mentioned diagrams are orbital structures of ethylene.
- The structural formula is:
Note: The bond angle $\angle HCC$ and $\angle HCH$ are ${{120}^{\circ }}$. The bond angle of c = c is 1.34 $\overset{\circ }{\mathop{A}}\,$. In ethylene the carbon is $s{{p}^{2}}$ hybridized. In case of alkane the carbon will be $s{{p}^{3}}$ and in case of alkyne the carbon is sp hybridized. Ethylene and ethene are the same. Ethene is the IUPAC name and ethylene is a common name.
Complete Solution :
- Alkenes are the hydrocarbons with general formula ${{C}_{n}}{{H}_{2n}}$ where n is the number of carbon atoms. It is an unsaturated hydrocarbon as alkene contains c-c double bond in their molecules. Alkenes also known as Olefins where, Oleum means oil and fines means to care. The lower members of alkene form oily products on treating it with bromine or chlorine. They are produced by cracking of petroleum.
- The first member of the alkene series is ethylene, the number of carbon atoms in ethylene is 2.
General formula = ${{C}_{n}}{{H}_{2n}}$
n = 2 ( for ethylene)
Substituting n in general formula,
\[{{C}_{2}}{{H}_{4}}\]
- The chemical formula of ethylene is \[{{C}_{2}}{{H}_{4}}\].
- In ethylene the carbon atoms are of $s{{p}^{2}}$ hybridized . They are attached to each other by one $\sigma $ bond and a $\sigma $ bond. The $\sigma $ bond is obtained by the overlap of $s{{p}^{2}}$ hybrid orbital and the $\pi $ bond is obtained by the overlap of unhybridized p orbitals.
These two above mentioned diagrams are orbital structures of ethylene.
- The structural formula is:
Note: The bond angle $\angle HCC$ and $\angle HCH$ are ${{120}^{\circ }}$. The bond angle of c = c is 1.34 $\overset{\circ }{\mathop{A}}\,$. In ethylene the carbon is $s{{p}^{2}}$ hybridized. In case of alkane the carbon will be $s{{p}^{3}}$ and in case of alkyne the carbon is sp hybridized. Ethylene and ethene are the same. Ethene is the IUPAC name and ethylene is a common name.
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