Question
What will be the colour of $Cd ^{2+}$ salts? Explain.
✓
Answer
- The electronic configuration of, ${ }_{48} Cd [ Kr ]^{36} 3 d^{10} 5 s^2$ and $Cd ^{2+}[ Kr ]^{36} 3 d^{10}$.
- $Cd^{2+}$ ions have completely filled $3d$ subshell and there are no unpaired electrons in $3d-$orbital.
- Hence $d \rightarrow d$ transition is not possible.
- Therefore, $Cd^{2+}$ ions do not absorb radiations in the visible region and the salts of $Cd^{2+}$ ions are colourless $($ or white$).$
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 IUPAC names of the following:
In a first order reaction $A \rightarrow$ product, $80 \%$ of the given sample of compound decomposes in $40\ min$. What is the half life period of the reaction?
→What is a cell constant ?
Distinguish between Schottky and Frenkel defect.
Define Enthalpy of sublimation. How is it related to enthalpy of fusion and enthalpy of vaporization?
Write the reaction of conc. $H_2SO_4$ with sugar.
→What is the action of hydroxyl amine $\left( NH _2 OH \right)$ on (1) acetaldehyde (2) acetone?
→Describe the action of hydroiodic acid on the following :
Diethyl ether.
Diethyl ether.
Define Rate law (or differential rate law).
What are the units of rate of a chemical reaction?