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Question: Answered & Verified by Expert
If the colours of salts of transition elements are due to the presence of unpaired electrons in the transition metal ions, which of the following ions will be colourless in aqueous solution
Chemistryd and f Block ElementsJEE Main
Options:
  • A $T i^{3+}$
  • B $T i^{4+}$
  • C $\mathrm{Fe}^{2+}$
  • D $\mathrm{Fe}^{3+}$
Solution:
1266 Upvotes Verified Answer
The correct answer is: $T i^{4+}$
$T i^{+4} \rightarrow 3 d^0 4 s^0 \quad \therefore$ no unpaired $\mathrm{e}^{-}$

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