1.

The angle strain in cyclobutane is

Answer»

`19^@22'`
`9^@44'`
`24^@44'`
`29^@16'`

Solution :ACCORDING to Baeyer's strain theory, the amount of the strain is directly PROPORTIONAL to the angle through which a valency bond has deviated from its normal position . i.e., Amount of deviation (d)=1/2 (`109^@28'` -valency angle ) in cyclobutane (d)=1/2 `(109^@28'-90^@)=9^@44'`


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