有X、Y、Z三种金属，把X和Y分别放在稀硫酸中，X溶解并产生氢气，
侯英超 |
发布日期：2010-06-27 06:10:46
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有X、Y、Z三种金属，把X和Y分别放在稀硫酸中，X溶解并产生氢气，Y不反应；若把Y和Z分别放入硝酸银溶液中，过一会儿，在Y的表面有银析出，而Z没有变化。根据以上实验事实，下列关于三种金属活动性由强到弱的判断正确的是 （ ） A.Y>X>Z B.X>Y>Z C.Z>X>Y D.X>Z>Y |
