• 2022-07-23
    下列物质熔沸点高低顺序正确的是( )
    A: K2O>CaO>PH3>NH3
    B: CaO>K2O>PH3>NH3
    C: K2O>CaO>NH3>PH3
    D: CaO>K2O>NH3>PH3