question_answer

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

A)  \[Xe{{F}_{4}}\]                

B)  \[BF_{4}^{-}\]   

C)  \[{{C}_{2}}{{H}_{4}}\]                                   

D)  \[Si{{F}_{4}}\]

Correct Answer: C

Solution :

                                                          In \[{{C}_{2}}{{H}_{4}}\], carbon- carbon double bond in alkenes consists of one strong sigma  bond and one weak pi (n) bond. In ethene ail the bonds are not equal. While in case of remaining species, all the bonds are equal.