If the colours of salts of transition element | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The colour of transition metal ions in aqueous solution is primarily due to $d-d$ transitions,which require the presence of unpaired electrons in

Vedclass · Accepted Answer

$Ti^{4+}$

Vedclass · Answer

(B) The colour of transition metal ions in aqueous solution is primarily due to $d-d$ transitions,which require the presence of unpaired electrons in the $d$-orbitals.$1$. Electronic configuration of $Ti$ $(Z=22)$: $[Ar] 3d^2 4s^2$. $Ti^{4+}$ ion: $[Ar] 3d^0 4s^0$. Since there are no unpaired electrons,$Ti^{4+}$ is colourless.$2$. Electronic configuration of $Ti^{3+}$ $(Z=22)$: $[Ar] 3d^1$. It has $1$ unpaired electron,so it is coloured.$3$. Electronic configuration of $Fe^{2+}$ $(Z=26)$: $[Ar] 3d^6$. It has $4$ unpaired electrons,so it is coloured.$4$. Electronic configuration of $Fe^{3+}$ $(Z=26)$: $[Ar] 3d^5$. It has $5$ unpaired electrons,so it is coloured.Therefore,the correct option is $B$.

If the colours of salts of transition elements are due to the presence of unpaired electrons in the transition metal ions,which of the following ions will be colourless in aqueous solution? (The atomic numbers of $Ti$ and $Fe$ are $22$ and $26$ respectively.)

Similar Questions

Pair of transition metal ions having the same number of unpaired electrons is $:$

Which of the following is a correct statement?

The number of $4f$ electrons in the ground state electronic configuration of $Gd^{2+}$ is ........ .
[Atomic number of $Gd=64$]

If a titanium compound exhibits a magnetic moment of $1.73 \, B.M.$,what is the oxidation state of $Ti$ in the compound?

Which of the following pairs of elements have one electron in the $5d$-subshell in their observed electronic configuration?

Vedclass Test Series

Exam Paper Generator

Online Exam Module