NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions
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Question : 18
Total: 49
Predict which of the following will be coloured in aqueous solution?
T i 3 + , V 3 + , C u + , S c 3 + , M n 2 + , F e 3 + C o 2 +
Solution:
The configuration of the given metal ions can be given as
T i 3 + – 3 d 1 4 s 0
V 3 + – 3 d 2 4 s 0
C u + – 3 d 10 4 s 0
S c 3 + – 3 d 0 4 s 0
M n 2 + – 3 d 5 4 s 0
F e 3 + – 3 d 5 4 s 0
C o 2 + – 3 d 7 4 s 0
Out of these onlyC u + S c 3 +
Out of these only
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