question_answer

Number of \[\pi -\] electrons in cyclobutadienyl anlon\[{{({{C}_{4}}{{H}_{4}})}^{2-}}\]is

A)  2                                            

B)  4

C)  6                                            

D)  8

Correct Answer: C

Solution :

                 The structure of cyclobutadienyl anion is as Thus, total number of re-electrons\[=2+2+2=6\]