318204
The incorrect statement regarding ethyne is
1 ethyne is linear
2 the \({\mathrm{\mathrm{C}-\mathrm{C}}}\) bond in ethyne is shorter than that in ethene
3 both carbons are sp hybridised
4 the carbon-carbon bond in ethyne is weaker than that in ethene.
Explanation:
Alkynes have the strongest bond among alkanes, alkenes and alkynes. This is because alkynes have the triple bond between carbon atoms which consist of one sigma bond and two pi bonds. So, the correct option is (4).
JEE Main - 2024
CHXI13:HYDROCARBONS
318205
In acetylene molecule, between the carbon atoms there are
1 three pi bonds
2 one sigma and two pi bonds
3 two sigma and one pi bonds
4 three sigma bonds
Explanation:
Acetylene: \(\mathrm{H}-\mathrm{C} \underset{2 \pi}{\stackrel{\sigma}{\equiv}} \mathrm{C}-\mathrm{H}\) \(\therefore\) Number of \(\sigma\) bonds \(=1\) Number of \(\pi\) bonds \(=2\) \(\therefore(1 \sigma+2 \pi)\) bonds are present between 2 carbon atoms.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI13:HYDROCARBONS
318204
The incorrect statement regarding ethyne is
1 ethyne is linear
2 the \({\mathrm{\mathrm{C}-\mathrm{C}}}\) bond in ethyne is shorter than that in ethene
3 both carbons are sp hybridised
4 the carbon-carbon bond in ethyne is weaker than that in ethene.
Explanation:
Alkynes have the strongest bond among alkanes, alkenes and alkynes. This is because alkynes have the triple bond between carbon atoms which consist of one sigma bond and two pi bonds. So, the correct option is (4).
JEE Main - 2024
CHXI13:HYDROCARBONS
318205
In acetylene molecule, between the carbon atoms there are
1 three pi bonds
2 one sigma and two pi bonds
3 two sigma and one pi bonds
4 three sigma bonds
Explanation:
Acetylene: \(\mathrm{H}-\mathrm{C} \underset{2 \pi}{\stackrel{\sigma}{\equiv}} \mathrm{C}-\mathrm{H}\) \(\therefore\) Number of \(\sigma\) bonds \(=1\) Number of \(\pi\) bonds \(=2\) \(\therefore(1 \sigma+2 \pi)\) bonds are present between 2 carbon atoms.