已知X、Y、Z为三种原子序数相连的元素,最高价氧化物对应水化物的

已知XYZ为三种原子序数相连的元素,最高价氧化物对应水化物的酸性相对强弱是:

HXO4H2YO4H3ZO4。则下列说法正确的是                                    

A.气态氢化物的稳定性:HXH2YZH3     B.非金属活泼性:YXZ

C.原子半径:XYZ                 D.原子序数:ZYX

答案

A

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