Question
$\ce{[Ti(H_2O)]^{3+}}$ is coloured while $\ce{[Sc(H_2O)_6]^{3+}}$ is colourless.
✓
Answer
This is due to $d-d$ transition of electron in $\ce{[Ti(H_2O)]^{3+}}$ complex $\ce{Ti^{3+}}$ has one electron in $d-$orbital $(3d^1)$ which absorb energy corresponding to blue$-$green region and jumps from $t_{2g}$ to $e_g$ set of $d-$orbitals $\big(\text{t}^1_{2\text{g}}\text{ e}^0_{\text{g}}\xrightarrow{\ \ \ \ \ }\text{t}^0_{2\text{g}}\text{ e}^1_{\text{g}}\big).$ But $Sc^{3+}$ has no electron in the $d-$orbital.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Write a note on DDT.
An anti-freeze solution is prepared from 222.6 g of ethylene glycol $ [C_{2}H_{4}(OH)_{2}] $, and 200 g of water. Calculate the molality of the solution. If the density of the solution is 1.072 g $ mL^{-1} $, then what shall be the molarity of the solution ?
→- Define crystal field splitting energy. On the basis of crystal field theory, write the electronic configuration for $d^4$ ion if $\triangle_0>\text{P}.$
- Write the hybridization and magnetic character of $\ce{[CoF_6]^{3–}}. ($At. no. of $Co = 27)$
Answer the following questions:
Compare non transition and transition elements on the basis of their.
Compare non transition and transition elements on the basis of their.
- Variability of oxidation states.
- Stability of oxidation states.
- Using valence bond theory predict the geometry and magnetic behaviour of $\ce{[Cr(NH_3)_6]^{3+ }ion[Cr=24]}.$
- Write $\text{IUPAC}$ name of:
Answer the following questions on the basis of the given plot of potential energy vs reaction coordinate$:$
→- What is the threshold energy for the reaction?
- What is the activation energy for forward reaction?
- What is the activation energy for backward reaction?
- What is enthalpy change for the forward reaction?
The Fischer projection of D-Glucose is given alongside.
What happens when L-Glucose is treated with Tollens’ reagent?
What happens when L-Glucose is treated with Tollens’ reagent?
How would you account for the following: Transition metals sometimes exhibit very low oxidation state such as $+1$ and $0.$
→What is meant by unidentate, didentate and ambidentate ligands? Give two examples for each.
For the complex $\ce{[Fe(en)_2Cl_2]Cl}, ($en $=$ ethylene diamine$),$ identify.
→- The oxidation number of iron,
- The hybrid orbitals and the shape of the complex,
- The magnetic behaviour of the complex,
- The number of geometrical isomers,
- Whether there is an optical isomer also, And
- Name of the complex. $($At. no. of $Fe = 26).$