2. Solved Papers
  3. CMC Medical

CMC Medical CMC-Medical VELLORE Solved Paper-2008

  • question_answer
    The correct order of ionic radii of \[{{Y}^{3+}},\]\[L{{a}^{3+}},\]\[E{{u}^{3+}}\]and \[L{{u}^{3+}}\] is

    A)  \[{{Y}^{3+}}<L{{a}^{3+}}<E{{u}^{3+}}<L{{u}^{3+}}\]

    B)  \[L{{u}^{3+}}<E{{u}^{3+}}<L{{a}^{3+}}<{{Y}^{3+}}\]

    C)  \[L{{a}^{3+}}<E{{u}^{3+}}<L{{u}^{3+}}<{{Y}^{3+}}\]

    D)  \[{{Y}^{3+}}<L{{u}^{3+}}<E{{u}^{3+}}<L{{a}^{3+}}\]

    E)  \[E{{u}^{3+}}<L{{a}^{3+}}<L{{u}^{3+}}<{{Y}^{3+}}\]

    Correct Answer: B

    Solution :

                    Ionic radii of lanthanide \[(L{{a}^{3+}})\]decrease with increase in atomic number. \[L{{u}^{3+}}<E{{u}^{3+}}<L{{a}^{3+}}<{{Y}^{3+}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner