D-And F-Block Elements Ques 401
Question: Among the following series of transition metal ions, the one where all metals ions have $ 3d^{2} $ electronic configuration is
[CBSE PMT 2004]
Options:
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+}} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ Ti_{22}=3d^{2}4s^{2} $ ; $ T{{i}^{2+}}=3d^{2} $
$ V_{23}=3d^{3}4s^{2} $ ; $ {{V}^{2+}}=3d^{2} $
$ Cr_{24}=3d^{4}4s^{2} $ ; $ C{{r}^{4+}}=3d^{2} $
$ Mn_{25}=3d^{5}4s^{2} $ ; $ M{{n}^{5+}}=3d^{2} $
