Compare the ...

Question

Compare the $C H$ bond strength in $C_{2} H_{6}, C_{2} H_{4}$ and $C_{2} H_{2}$ .

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Solution

Bond length order follows- triple bond < double bond < single bond.

Bond strength is inversely proportional to bond length.
So, the order of bond strength will be :
triple bond > double bond > single bond

So, the correct orders of given compounds will be :
$C_{2} H_{2} > C_{2} H_{4} > C_{2} H_{6}$

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