In the following pairs,the one in which both | vedclass

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

Question

(A) Transition metal ions are colourless if they do not have unpaired electrons to undergo $d-d$ transitions. This occurs in ions with $d^{0}$ or $d^{

Vedclass · Accepted Answer

$Sc^{3+}, Zn^{2+}$

Vedclass · Answer

(A) Transition metal ions are colourless if they do not have unpaired electrons to undergo $d-d$ transitions. This occurs in ions with $d^{0}$ or $d^{10}$ electronic configurations.$A$) $Sc^{3+}$ $(3d^{0})$ and $Zn^{2+}$ $(3d^{10})$: Both have no unpaired electrons,so they are colourless.$B$) $Ti^{4+}$ $(3d^{0})$ is colourless,but $Cu^{2+}$ $(3d^{9})$ has one unpaired electron and is coloured.$C$) $V^{2+}$ $(3d^{3})$ and $Ti^{3+}$ $(3d^{1})$: Both have unpaired electrons and are coloured.$D$) $Zn^{2+}$ $(3d^{10})$ is colourless,but $Mn^{2+}$ $(3d^{5})$ has five unpaired electrons and is coloured.Therefore,the correct pair is $Sc^{3+}, Zn^{2+}$.

In the following pairs,the one in which both transition metal ions are colourless is

Similar Questions

What is the time (in $sec$) required for depositing all the silver present in $125 \ mL$ of $1 \ M \ AgNO_3$ solution by passing a current of $241.25 \ A$? $(1 \ F = 96500 \ C)$

What products are formed when $1 \ mol$ of calcium phosphide reacts with an excess of water?

Consider a car moving on a straight road with a speed of $100\, m/s$. The distance at which the car can be stopped is ........ $m$. (Take $g = 10\, m/s^2$ and $\mu_k = 0.5$)

One gas bleaches the colour of flowers by reduction,while the other by oxidation,the two gases respectively are

Which mineral element is present in the structure of the amino acids cysteine and methionine?

Vedclass Test Series

Exam Paper Generator

Online Exam Module