Question

In which of the following molecule/ion all the bonds are not equal?

• A. $Xe{F}_4$
• B. $B{F}_4{}^{-}$
• C. $C_2{H}_4$
• D. $Si{F}_4$

Answer 1

The correct option is C $C_2{H}_4$

$Xe{F}_4$ has only double bonds,

$B{F}_4^{-}$ and $Si{F}_4$ have only single bonds in their structure,

but $C_2{H}_4$ has both single and double bonds,

So the correct option is $\left[C\right]$.