D-And F-Block Elements Ques 455
Question: Which group contains coloured ions out of
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$ C{{u}^{2+}} $
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$ T{{i}^{4+}} $
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$ C{{o}^{2+}} $
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$ F{{e}^{2+}} $
Options:
A) 1, 2, 3, 4
B) 1, 3, 4
C) 2, 3
D) 1, 2
Show Answer
Answer:
Correct Answer: B
Solution:
$ C{{u}^{2+}}[Ar]3d^{9},T{{i}^{4+}}[Ar]3d^{0},C{{o}^{2+}},[Ar]3d^{7} $ $ F{{e}^{2+}}[Ar]3d^{6} $ 1, 3, 4 are coloured ions hence the answer is b.
