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Question

Statement I: The hybrid orbitals of carbon in acetylene are believed to be the sp form
Because
Statement II: Acetylene is a linear compound with a triple bond between the carbons

A
Both statement 1 and statement 2 are correct and statement 2 is the correct explanation for statement 1
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B
Both statement 1 and statement 2 are correct but statement 2 is not the correct explanation for statement 1
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C
Statement 1 is correct but statement 2 is incorrect
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D
Statement 1 is incorrect but statement 2 is correct
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E
Both statement 1 and statement 2 are incorrect

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Solution

The correct option is A Both statement 1 and statement 2 are correct and statement 2 is the correct explanation for statement 1
Ethyne has a triple bond between the two carbon atoms. In the diagram each line represents one pair of shared electrons.Each carbon is only joining to two other atoms rather than four (as in methane or ethane) or three (as in ethene) and so when the carbon atoms hybridise their outer orbitals before forming bonds, this time they only hybridise twoof the orbitals.

They use the 2s electron and one of the 2p electrons, but leave the other 2p electrons unchanged. The new hybrid orbitals formed are called sp hybrids, because they are made by an s orbital and a single p orbital reorganising themselves.


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