Q. In which of these cyclic compounds you find the minimum angle strain?

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A

$C_{3}H_{6}$

B

$C_{4}H_{8}$

C

$C_{5}H_{10}$

D

$C_{6}H_{12}$

Solution:

According to Baeyer's strain theory:-
Stability of cycloalkane is inversely proportional to the angle of strain $\left(\text{\theta }\right)$ means a greater angle of strain lesser stability of cycloalkane (till cyclohexane).
Stability order of cycloalkane:
$\left(\text{C}\right)_{3} \left(\text{H}\right)_{6} < \left(\text{C}\right)_{4} \left(\text{H}\right)_{8} < \left(\text{C}\right)_{5} \left(\text{H}\right)_{10} < \left(\text{C}\right)_{6} \left(\text{H}\right)_{12} \left( \text{Minimum} \text{\theta }\right) \text{}$

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