KCET · Chemistry · d and f Block Elements
Which one of the following is correct for all elements from Sc to Cu?
- A The lowest oxidation state shown by them is \(+2\)
- B \(4 s\) orbital is completely filled in the ground state
- C \(3 d\) orbital is not completely filled in the ground state
- D The ions in \(+2\) oxidation states are paramagnetic
Answer & Solution
Correct Answer
(D) The ions in \(+2\) oxidation states are paramagnetic
Step-by-step Solution
Detailed explanation
\(\therefore\) Only option (d) (i.e. \(\mathrm{Mn}^{2+}, \mathrm{Ti}^{3+}\) pair) is coloured in aqueous solution.
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