Colours in Coordination Compounds

$\text{Statement I}$ :  [Ti(H₂O)₆]⁴⁺ is coloured while [Sc(H₂O)₆]³⁺ is colourless.
$\text{Statement II}$ : d - d transition is not possible in [Sc(H₂O)₆]³⁺

Given below are two statements, one is labelled as assertion $\mathbf{A}$ and the other is labelled as Reason $\mathbf{R}$.
assertion $\mathbf{A}$ : ${\left[\mathrm{CoCl}{\left({\mathrm{NH}}_3\right)}_5\right]}^{2+}$ absorbs at lower wavelength of light with respect to ${\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_5\left({\mathrm{H}}_2\mathrm{O}\right)\right]}^{3+}$
Reason $\mathbf{R}$: It is because the wavelenght of light absorbed depends on the oxidation state of the metal ion.
In the light of the above statements,choose the correct answer from the options given below:

Which of the following is correct related to the colours of ${\mathrm{TiCl}}_3\left(\mathrm{X}\right)\left[\mathrm{Ti}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]{\mathrm{Cl}}_3\left(\mathrm{Y}\right)$

Hexacyano complexes of metals in their +2 oxidation state are usually yellow while the corresponding hexaaqua compounds are often blue or green, this is so because

$[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{]}^{+2}$ (aq) is green in colour whereas $[\mathrm{Ni}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4\left(\mathrm{en}\right){]}^{+2}$(aq) is blue in colour, give reason in support of your answer. 

The complex that absorbs at longer wavelength is

Explain the colour and composition of ruby gemstone.

Explain the composition and colour of ruby stone.

What determines the Colour of gemstones ?

What is the colour of ${\left[\mathrm{Ti} {\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$?

Which of the following complexes is expected to be colored?

The octahedral complex of a metal ion ${\mathrm{M}}^{3+}$ with four monodentate ligands ${\mathrm{L}}_1, {\mathrm{L}}_2, {\mathrm{L}}_3 \mathrm{and} {\mathrm{L}}_4$ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is

${\left[\mathrm{S}\mathrm{c}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ ion is

Which of the following compounds is not coloured?

What is the green gemstone called?

Cranberry glass is a red glass made by adding _____ salts to molten glass.

Which elements give the gemstone emerald its green colour?

How do gemstones get their colour?

Blue coloured copper sulphate solution gave following experimental results. Explain the same. With aqueous potassium fluoride it gave a green precipitate.

Blue coloured copper sulphate solution gave following experimental results. Explain the same. With aqueous potassium chloride it gave bright green solution.