${\rm{T}}{{\rm{i}}^{3 + }}$

${\rm{M}}{{\rm{n}}^{2 + }}$

${\rm{S}}{{\rm{c}}^{3 + }}$

${\rm{F}}{{\rm{e}}^{2 + }}$

Less

More

Equal

None of these

It has a completely filled $s$-orbital.

It has a small atomic size.

It has a completely filled $d$-orbital that prevents $d - d$ overlapping of orbitals.

It has a completely filled $d$- orbital that causes $d - d$ overlapping.

True

False

Zr has a significantly larger radius than Y

Y has a significantly larger radius than Zr

Transition elements have low melting points.

Transition elements do not have catalytic activity.

Transition elements exhibit variable oxidation states.

Transition elements show inert pair effect.

$Ti^{3+}$ and $V^{3+}$

$Cr^{2+}$ and $Fe^{2+}$

$Mn^{2+}$ and $Fe^{2+}$

$Ti^{3+}$ and $Fe^{3+}$

$La{\left( {OH} \right)_3}$

$Eu{\left( {OH} \right)_3}$

$Er{\left( {OH} \right)_3}$

$Lu{\left( {OH} \right)_3}$

Co

Ni

Cu

Al

They exhibit variable oxidation states.

They form colored compounds.

They are paramagnetic.

They have low melting points.

${\left[ {{\rm{Cu}}\left( {{\rm{N}}{{\rm{H}}_3}} \right)} \right]^ + }$

${\left[ {{\rm{Cu}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_4}} \right]^{2 + }}$

${\left[ {{\rm{Cu}}{{\left( {{\rm{N}}{{\rm{H}}_3}} \right)}_2}} \right]^{2 + }}$

None of these

Al

Mg

Ag

Ca