Question

Which among the following is a lewis base?

• A.
  $C_6{H}_6$
• B.
  $F{e}^{3+}$
• C.
  $B{r}_2$
• D.
  RMgx

Answer 1

The correct option is A

$C_6{H}_6$
Lewis bases are those which can donate a lone pair of electrons.
Out of these, only benzene has delocalised electrons that can be donated and hence, is a lewis base.