Single Choice

Which one of the following ionic species will not impart color to an aqueous solution?

A$${Ti}^{4+}$$
B$${Cu}^{+}$$
C$${Zn}^{2+}$$
D$${Cr}^{3+}$$
Correct Answer

Solution

The transition metal ions which have completely filled d-orbitals are colorless.

The transition metal ions which have completely empty d-orbitals are also colorless.

$$ Cr^{3+}$$ has a blue-green color. because contain unpair electrons.

Rest all are colorless.

SIMILAR QUESTIONS

d - block and f - block Elements

Which of the following ions will exhibit colour in aqueous solutions?

d - block and f - block Elements

Which one of the following ions will be colourless in an aqueous solution?

d - block and f - block Elements

In which of the following pairs are both the ions coloured in aqueous solution? [At. No. : $$Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27$$]

d - block and f - block Elements

The transition metal ions responsible for color in Ruby and Emerald are, respectively :

d - block and f - block Elements

The color of $$Co{ Cl }_{ 3 }.5{ NH }_{ 3 }.{ H }_{ 2 }O$$ is:

d - block and f - block Elements

Which of the following compound is expected to be coloured?

d - block and f - block Elements

Which of these ions is expected to be coloured in aqueous solution? I. $${Fe}^{3+}$$ II. $${Ni}^{2+}$$ III. $${Al}^{3+}$$

d - block and f - block Elements

Identify the oxidation states of titanium $$(Z=22)$$ and copper $$(Z=29)$$ in their colourless compounds:

d - block and f - block Elements

Predict which of the following will be coloured in aqueous solution? $$Ti^{3+}, V^{3+}, Cu^{+}, Sc^{3+}, Mn^{2+}, Fe^{3+}$$ and $$Co^{2+}$$. Give reasons for each

d - block and f - block Elements

Choose the correct answer from the alternative given. Amongst $$TiF_6^{2-}$$, $$CoF$$, $$Cu_2$$ $$Cl_2$$ and $$NiCl$$, which are the colourless species? (atomic number of Ti = 22, Co = 27, Cu = 29, Ni = 28)

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