Which compound has a coloured aqueous solutio | vedclass

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

Question

(C) Transition metal compounds exhibit colour in aqueous solution due to the presence of unpaired $d$-electrons,which allow for $d-d$ transitions. In

Vedclass · Accepted Answer

$Co(NO_3)_2$

Vedclass · Answer

(C) Transition metal compounds exhibit colour in aqueous solution due to the presence of unpaired $d$-electrons,which allow for $d-d$ transitions. In $Zn(NO_3)_2$,$Zn^{2+}$ has a $3d^{10}$ configuration (no unpaired electrons). In $LiNO_3$,$Li^+$ is an alkali metal ion with no $d$-electrons. In $Ba(NO_3)_2$,$Ba^{2+}$ is an alkaline earth metal ion with no $d$-electrons. In $Co(NO_3)_2$,$Co^{2+}$ has a $3d^7$ configuration,which contains unpaired electrons,making the aqueous solution coloured.

Which compound has a coloured aqueous solution?

Similar Questions

Which of the following electronic configurations is associated with the highest stable oxidation state?

Which of the following represents the correct order of the given properties?

How many of the following lanthanide elements exhibit $+4$ oxidation state?
$Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy$

Which of the following elements are not regarded as transition elements?

Assertion : The free gaseous $Cr$ atom has six unpaired electrons.
Reason : Half-filled $s$ orbital has greater stability.

Vedclass Test Series

Exam Paper Generator

Online Exam Module