(couleur) grey (Grande-Bretagne) , gray (USA) il fait gris it's a dull day, it's a grey day. faire grise mine to look morose. faire grise mine Ã  qn to give sb a cool reception.
In electrophilic aromatic substitution, the benzene ring acts as an electron donor (Lewis base or nucleophile) and reacts with an electron acceptor (Lewis acid or electrophile). The result of electrophilic aromatic substitution reactions is that an aromatic hydrogen is replaced by some other atom or functional group.
Jun 29, 2014. There are three antibonding orbitals in benzene. The six atomic p orbitals combine to form six molecular #Ï# orbitals. The three lowest orbitals #Ï_1#, #Ï_2#, and #Ï_3# are bonding orbitals. The six #Ï# electrons occupy these orbitals. The remaining orbitals #Ï_4^â³#, #Ï_5^â³#, and #Ï_6^â³# are antibonding orbitals.