Which of the following complexes is colored?

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

Question

(D) complex is colored if it contains a metal ion with an incomplete $d$-subshell,allowing for $d-d$ transitions.In $K_3[VF_6]$,the vanadium is in the

Vedclass · Accepted Answer

$K_3[VF_6]$

Vedclass · Answer

(D) complex is colored if it contains a metal ion with an incomplete $d$-subshell,allowing for $d-d$ transitions.In $K_3[VF_6]$,the vanadium is in the $V^{3+}$ oxidation state.The electronic configuration of $V^{3+}$ is $[Ar] 3d^2$.Since it has unpaired electrons in the $d$-orbital,it undergoes $d-d$ transitions and exhibits color.In contrast,$Ti(NO_3)_4$ has $Ti^{4+}$ $(3d^0)$,$[Cu(NCCH_3)_4]^{+}$ has $Cu^{+}$ $(3d^{10})$,and $Li[AlH_4]$ contains $Al^{3+}$ $(2p^6)$,all of which lack unpaired $d$-electrons.

Similar Questions

The increasing order of magnetic moments for the following complexes is:
$I$. $[Fe(CN)_6]^{4-}$
$II$. $[Fe(CN)_6]^{3-}$
$III$. $[Cr(NH_3)_6]^{3+}$
$IV$. $[Ni(H_2O)_4]^{2+}$

$[Co(NH_3)_5NO_2]Cl_2$ and $[Co(NH_3)_5(ONO)]Cl_2$ are related to each other as

The $d-$electron configurations of $Cr^{2+}, Mn^{2+}, Fe^{2+}$ and $Co^{2+}$ are $d^4, d^5, d^6$ and $d^7$ respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. nos. $Cr = 24, Mn = 25, Fe = 26, Co = 27$)

Choose the complexes which are paramagnetic from the following:
$(i)$ $K_4[Fe(CN)_6]$
(ii) $K_3[Cr(CN)_6]$
(iii) $K_3[Fe(CN)_6]$
(iv) $K_2[Ni(CN)_4]$

Which of the following is diamagnetic?

Vedclass Test Series

Exam Paper Generator

Online Exam Module