(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.
No, hydrogen is not a halogen. the 17th column on the periodic table is called halogen column. both halogens and hydrogen are diatomic elements, but the difference is that halogens have ionic charge of minus 1. But, hydrogen can have either ion charge of plus 1 or minus 1. hope that helps.alogens are the name of a group of non-metal elements found on the Periodic Table, Group 7A (or 17). Halogens include fluorine, chlorine, bromine, iodine and astatine. Haloge â¦ n lamps usually contain an inert (Noble) gas and a small amount of bromine or iodine surrounding the filament.