有三种金属元素a、b、c,在相同条件下,b的最高价氧化物对应水化

有三种金属元素a、b、c,在相同条件下,b的最高价氧化物对应水化物的碱性比a的最高价氧化物对应水化物的碱性强;a可以从c的盐溶液中置换出c。则这三种金属元素的金属性由强到弱的顺序是(    )

A.a、b、c          B.b、a、c             C.b、c、a          D.c、b、a

答案

B


解析:

最高价氧化物对应水化物的碱性越强,对应元素的金属性也就越强,金属性b>a;a能置换出c,说明a比c活泼。故b>a>c。

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