) ~( R5 t" F4 B7 a, \; r# ]3 _第九题化学英语题 / b/ [; F7 E$ ^3 O3 Y0 I" | XWhat is always correct about the molecular ion, M+, in a mass spectrum of a compound? ) j6 R H) V9 OA. The M+ ion peak has the smallest m/z ratio in the mass spectrum. " l' J- C" m: J* o/ V; i( VB. The m/z ratio of the M+ ion peak gives the relative molecular mass of the molecule. ! p& N! a. m! k. [# @8 m, EC. The M+ ion is the most stable fragment formed during electron bombardment.4 q& S1 X# l7 o: w. r(欢迎访问avcar:https://avcar.vip)
D. The M+ ion peak has the greatest intensity in the mass spectrum.* f7 k* K9 g( k(欢迎访问avcar:https://avcar.vip)