NEET Sample Paper NEET Sample Test Paper-79

  • question_answer
    In which of the following oxides, central metal is showing variable valencies?

    A)  \[{{\operatorname{Fe}}_{2}}{{O}_{3}}\]                     

    B)  \[Ba{{O}_{2}}\]

    C)  \[{{\operatorname{PbO}}_{2}}\]                      

    D)  \[{{\operatorname{Pb}}_{3}}{{O}_{4}}\]

    Correct Answer: D

    Solution :

    \[P{{b}_{3}}{{O}_{4}}\] is a mixed oxide which has two types of oxidation states of P It can be represented as \[\operatorname{PbO} - P{{b}_{2}}{{O}_{3}}\]


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