JEE Main · 2021 · 16 Mar 2021 · Shift 2 · Coordination Compounds

Given below are two statements:

Statement I: Among $[\mathrm{Cu}({\mathrm{NH}}_3{)}_4{]}^{2+}$, $[\mathrm{Ni}(\mathrm{en}{)}_3{]}^{2+}$, $[\mathrm{Ni}({\mathrm{NH}}_3{)}_6{]}^{2+}$ and $[\mathrm{Mn}({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$, …

Consider the transition metal ions ${\mathrm{Mn}}^{3+},{\mathrm{Cr}}^{3+},{\mathrm{Fe}}^{3+}$ and ${\mathrm{Co}}^{3+}$ and all form low spin octahedral complexes. The correct decreasing order of unpaired electrons in their respective d-orbitals of the complexes is

A first row transition metla (M) does not liberate ${\mathrm{H}}_2$ gas from dilute HCl .1 mol of aqueous solution of ${\mathrm{MSO}}_4$ is treated with excess of aqueous KCN and then ${\mathrm{H}}_2\mathrm{S}(\mathrm{g})$ is passed through the solution. The amount of MS …

Given below are two statements:

Statement I: Crystal Field Stabilization Energy (CFSE) of ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$ is greater than that of ${\left[\mathrm{Mn}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}$.

Statement II: Pot …

Identify the metal ions among ${\mathrm{Co}}^{2+}$, ${\mathrm{Ni}}^{2+}$, ${\mathrm{Fe}}^{2+}$, ${\mathrm{V}}^{3+}$ and ${\mathrm{Ti}}^{2+}$ having a spin-only magnetic moment value more than 3.0 BM. The sum of unpaired electrons present in the high spin octahedral complexes formed by thos …

$[\mathrm{Ni}({\mathrm{PPh}}_3{)}_2{\mathrm{Cl}}_2]$ is a paramagnetic complex. Identify the INCORRECT statements about this complex.
A. The complex exhibits geometrical isomerism.
B. The complex is white in colour.
C. The calculated spin-only magnetic moment of the complex is 2. …