NEET Sample Paper NEET Sample Test Paper-64

  • question_answer
    Among the following series of transition metal ions, the one where all metal ions have \[3{{d}^{2}}-\]electronic configuration is

    A) \[T{{i}^{3\,+}},\,\,{{V}^{2\,+}},\,\,C{{r}^{3\,+}},\,\,M{{n}^{4\,+}}\]

    B) \[T{{i}^{\,+}},\,\,{{V}^{4\,+}},\,\,C{{r}^{6\,+}},\,\,M{{n}^{7\,+}}\]

    C) \[T{{i}^{\,4+}},\,\,{{V}^{3\,+}},\,\,C{{r}^{2\,+}},\,\,M{{n}^{3\,+}}\]

    D) \[T{{i}^{\,2+}},\,\,{{V}^{3\,+}},\,\,C{{r}^{4\,+}},\,\,M{{n}^{5\,+}}\]

    Correct Answer: D

    Solution :

    \[T{{i}^{2+}}\,\,=\,\,1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{0}}\] \[{{V}^{3+}}\,\,=\,\,1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{0}}\] \[C{{r}^{4+}}\,\,=\,\,1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{0}}\] \[M{{n}^{5+}}\,\,=\,\,1{{s}^{2}}2{{s}^{2}}2{{p}^{6}}3{{s}^{2}}3{{p}^{6}}3{{d}^{2}}4{{s}^{0}}\]


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