JEE Main & Advanced Chemistry The d-and f-Block Elements / d तथा f ब्लॉक के तत्व Question Bank General Characteristics

  • question_answer
    Among the following series of transition metal ions, the one where all metals ions have \[3{{d}^{2}}\] electronic configuration is [CBSE PMT 2004]

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

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

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

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

    Correct Answer: B

    Solution :

    \[T{{i}_{22}}=3{{d}^{2}}4{{s}^{2}}\]; \[T{{i}^{2+}}=3{{d}^{2}}\] \[{{V}_{23}}=3{{d}^{3}}4{{s}^{2}}\]; \[{{V}^{2+}}=3{{d}^{2}}\] \[C{{r}_{24}}=3{{d}^{4}}4{{s}^{2}}\]; \[C{{r}^{4+}}=3{{d}^{2}}\] \[M{{n}_{25}}=3{{d}^{5}}4{{s}^{2}}\]; \[M{{n}^{5+}}=3{{d}^{2}}\] 


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