Crystal Field Theory

$\text{Statement I}$ :  [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⁺

The correct order for the wavelengths of absorption in the visible region for the following is: ${\left[\text{Ni}{\left({\text{NO}}_{\text{2}}\right)}_6\right]}^{4-},{\left[\text{Ni}{\left({\text{NH}}_{\text{3}}\right)}_6\right]}^{2+},{\left[\text{Ni}{\left({\text{H}}_{\text{2}}\text{O}\right)}_6\right]}^{2+}$

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:

Match List I with List II

Choose the correct answer from the options given below:

Which of the following complexes will exhibit maximum attraction to an applied magnetic field?

The homoleptic and octahedral complex of ${\mathrm{Co}}^{2+}$ and ${\mathrm{H}}_2\mathrm{O}$ has ______ unpaired electron(s) in the ${\mathrm{t}}_{2\mathrm{g}}$ set of orbitals.

The complex with highest magnitude of crystal field splitting energy $\left({∆}_0\right)$ is

In potassium ferrocyanide, there are ______ pairs of electrons in the ${\mathrm{t}}_{2\mathrm{g}}$ set of orbitals.

Match List-I with List-II.

Choose the correct answer from the options given below:

The magnitude of crystal field stabilisation energy (CFSE) in tetrahedral complexes is considerably less than in the octahedral field because

CFSE of octahedral complex of ${\mathrm{Mn}}^{2+}$ (low spin) will be: [Excluding pairing energy term ]

Crystal Field Splitting Energy (CFSE) for ${\left[{\mathrm{CoCl}}_6\right]}^{4-}$ is $18000 {\mathrm{cm}}^{-1}$. The Crystal Field Splitting Energy (CFSE) for ${\left[{\mathrm{COCl}}_4\right]}^{2-}$ will be

The correct order of decreasing field strength of the below given ligands is

The crystal filed theory is successful in explaining which of the following?

I. Ligands as point charges;

II. Formation and structures of complexes.

III. colour;

IV. Magnetic properties:

V . covalent character of metal-ligand bonding.

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

As ${\mathrm{NH}}_3$ is a strong ligand, then why it is not pairing $3\mathrm{d}$-electrons in $[\mathrm{Ni}{\left({\mathrm{NH}}_3\right)}_6{]}^{+2}$.

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

Which of the following complex will absorb maximum wavelength of light?

Which of the following configuration of ions has zero CFSE in both strong and weak ligand fields ?