下列有关碱金性铷(Rb)的叙述中,正确的是(   )     A.灼烧氯化

下列有关碱金性铷(Rb)的叙述中,正确的是(  

    A.灼烧氯化铷时,火焰没有特殊颜色          B.硝酸铷是离子化合物,易溶于水

    C.在钠、钾、铷三种单质中,铷的熔点最高    D.氢氧化铷是弱碱

答案

B

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