Which of the following is not correct?
(a) In haloarenes, the electron pairs on halogen atom are in conjugation with π-electrons of the ring.
(b) The carbon-magnesium bond is covalent and non-polar in nature .
(c) During SN1 reaction, the carbocation formed in the slow step being sp2 hybridised is planar.
(d) Out of CH2 = CH-Cl and C6H5CH2Cl, C6H5CH2Cl is more reactive towards SN1 reaction.
