摘要:下列反应中:①2NaA+B2=2NaB+A2,②2NaA+C2=2NaC+A2, ③2NaB+C2=2NaC+B2,④2NaC+D2=2NaD+C2.则A2.B2.C2.D2的非金属性由强到弱的顺序是 A. A2.B2.C2.D2 B. B2.A2.C2.D2 C. C2.B2.A2.D2 D. D2.C2.B2.A2
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