Which of the following complex ions is expect | vedclass

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

Question

(C) Only those transition metal complexes are expected to absorb visible light in which the $d$-subshell is incomplete,allowing for $d-d$ electronic t

Vedclass · Accepted Answer

$[Cr(NH_3)_6]^{3+}$

Vedclass · Answer

(C) Only those transition metal complexes are expected to absorb visible light in which the $d$-subshell is incomplete,allowing for $d-d$ electronic transitions. $(A)$ In $[Ti(en)_3]^{4+}$,$Ti$ is in the $Ti^{4+}$ state: $[Ar] 3d^0$. Since there are no $d$-electrons,no $d-d$ transition is possible. $(B)$ In $[Sc(NH_3)_4(H_2O)_2]^{3+}$,$Sc$ is in the $Sc^{3+}$ state: $[Ar] 3d^0$. No $d$-electrons are available for transition. $(C)$ In $[Cr(NH_3)_6]^{3+}$,$Cr$ is in the $Cr^{3+}$ state: $[Ar] 3d^3$. The presence of unpaired electrons in the $d$-orbitals allows for $d-d$ transitions,making it absorb light in the visible region. $(D)$ In $[Zn(CN)_4]^{2-}$,$Zn$ is in the $Zn^{2+}$ state: $[Ar] 3d^{10}$. The $d$-subshell is completely filled,so no $d-d$ transition is possible. The correct option is $C$.

Complex	Structure and magnetic property
$i$. $NiCl_4^{2-}$	$p$. tetrahedral and diamagnetic
$ii$. $Ni(CO)_4$	$q$. tetrahedral and paramagnetic
$iii$. $PtCl_4^{2-}$	$r$. square planar and diamagnetic
$iv$. $Ni(CN)_4^{2-}$	$s$. square planar and paramagnetic

Which of the following complex ions is expected to absorb light in the visible region?

Similar Questions

What is the magnetic moment value of $Cr(CO)_6$ in Bohr Magneton units?

Which of the following complexes will show maximum paramagnetism?

Which of the following complex compounds has the highest number of geometrical isomers?

Vedclass Test Series

Exam Paper Generator

Online Exam Module