Inorganic Chemistry PYQ — Page 44

The reaction of ${H}_{3}{N}_{3}{B}_{3}C{l}_{3}(A)$ with $LiB{H}_{4}$ in tetrahydrofuran gives inorganic benzene $(B)$ . Further, the reaction of $(A)$ with $(C)$ leads to ${H}_{3}{N}_{3}{B}_{3}{(Me)}_{3}$ . Compounds $(B)$ and $(C)$ respectively, are:

The correct electronic configuration and spin-only magnetic moment (BM) of ${\mathrm{Gd}}^{3+}(Z=64),$ respectively, are :

The first ionization energy (in $kJ/mol$ ) of $Na,Mg,Al$ and $Si$ respectively are:

The number of possible optical isomers for the complexes ${MA}_{2}{B}_{2}$ with $s{p}^{3}$ and $ds{p}^{2}$ hybridized metal atom, respectively, is: Note: $A$ and $B$ are unidentate neutral and unidentate monoanionic ligands, respectively.

The d-electron configuration of $[\mathrm{Ru}(\mathrm{en}{)}_{3}]{\mathrm{Cl}}_{2}$, and $[\mathrm{Fe}{({H}_{2}O)}_{6}]{\mathrm{Cl}}_{2}$ respectively are:

The third ionization enthalpy is minimum for:

The potential energy curve for the ${H}_{2}$ molecule as a function of internuclear distance is:

If the magnetic moment of a di-oxygen species is $1.73 B.M.$, it may be

The compound that has the largest $H–M–H$ bond angle $(M=N,O,S,C)$, is :

The first and second ionisation enthalpies of a metal are $496$ and $4560kJmo{l}^{-1}$, respectively. How many moles of $HCl$ and ${H}_{2}S{O}_{4},$ respectively, will be needed to react completely with $1$ mole of the metal hydroxide?

If the boiling point of ${H}_{2}O$ is $373K$, and the boiling point of ${H}_{2}S$ will be :

The values of the crystal field stabilization energies for a high spin ${d}^{6}$ metal ion in octahedral and tetrahedral fields, respectively, are:

The one that will show optical activity is ($\mathrm{en}=$ethane$-1,2-$diamine)

The complex that has highest crystal field splitting energy $(\Delta )$ , is:

The pair that contains two $P-H$ bonds in each of the oxoacids is:

${C}_{60},$ an allotrope of carbon contains

Among the following, the molecule expected to be stabilized by anion formation is: ${C}_{2}, {O}_{2}, NO, {F}_{2}$

During the change of ${O}_{2}$ to ${O}_{2}^{-}$ , the incoming electron goes to the orbital:

The hydride that is NOT electron deficient is:

The chloride that CANNOT get hydrolysed is:

The calculated spin-only magnetic moments $(BM)$ of the anionic and cationic species of ${ [ \text{Fe}{ ( {\text{H}}_{2} \text{O})}_{6} ]}^{ +2}$ and ${[\text{Fe }{(\text{CN})}_{6}]}^{4-}$ respectively, are:

In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?

The relative stability of +1 oxidation state of group 13 elements follows the order

Among the following molecules/ ions, ${C}_{2}^{2-}, {N}_{2}^{2-},{O}_{2}^{2-}, {O}_{2}$ Which one is diamagnetic and has the shortest bond length?