JEE Main Chemistry — Inorganic Chemistry previous year questions with solutions.
Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value. Complexes: $\begin{matrix}\underset{A}{{[{\mathrm{CoF}}_{6}]}^{3-}}, & \underset{B}{{[\mathrm{Co}{({H}_{2}O)}_{6}]}^{2+}}, & \underset{C}{{[\mathrm{Co}{({\mathrm{NH}}_{3})}_{6}]}^{3+}}\text{ and }\underset{D}{{[\mathrm{Co}(\mathrm{en}{)}_{3}]}^{3+}} & \end{matrix}$ Choose the correct option :
Identify the element for which electronic configuration in $+3$ oxidation state is $[\mathrm{Ar}]3{d}^{5}:$
Chalcogen group elements are :
The number of lone pairs of electrons on the central $I$ atom in ${I}_{3}^{-}$ is 
According to the valence bond theory the hybridization of central metal atom is ${\mathrm{dsp}}^{2}$ for which one of the following compounds?
Which one of the following group-$15$ hydride is the strongest reducing agent ?
The interaction energy of London forces between two particles is proportional to ${r}^{x}$, where $r$ is the distance between the particles. The value of $x$ is :
Which one of the following statements for D.I. Mendeleeff, is incorrect ?
Identify the elements $X$ and $Y$ using the ionization energy values given below : $\begin{matrix} & \mathrm{Ionization}\mathrm{energy} & (\mathrm{kJ}/\mathrm{mol}) \\ & {1}^{\mathrm{st}} & {2}^{\mathrm{nd}} \\ X & 495 & 4563 \\ Y & 731 & 1450\end{matrix}$
The values of the crystal field stabilization energies for a high spin ${d}^{6}$ metal ion in octahedral and tetrahedral fields, respectively, are:
Within each pair of elements $F$ and $Cl$ , $S$ and $Se$ , and $\text{Li}$and $\mathrm{Na}$ , respectively, the elements that release more energy upon an electron gain are
The five successive ionization enthalpies of an element are $800,2427,3658,3502432824\mathrm{kJ}{\mathrm{mol}}^{–1}$ . The number of valence electrons in the element is:
If the boiling point of ${H}_{2}O$ is $373K$, and the boiling point of ${H}_{2}S$ will be :
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?
The number of unpaired electrons in Fe²⁺ ion is:
${[Pd(F)(Cl)(Br)(I)]}^{2-}$ has $n$ number of geometrical isomers. Then, the spin-only magnetic moment and crystal field stabilization energy $[CFSE]$ of ${[Fe{(CN)}_{6}]}^{n-6}$ , respectively, are: [Note: Ignore the pairing energy]
The species that has a spin-only magnetic moment of $5.9\mathrm{BM},$ is : (${T}_{d}=$tetrahedral)
The IUPAC name of the complex $[Pt{(N{H}_{3})}_{2}Cl(N{H}_{2}C{H}_{3})]Cl$ is
The number of bonds between sulphur and oxygen atoms in ${S}_{2}{O}_{8}^{2-}$ and the number of bonds between sulphur and sulphur atoms in rhombic sulphur, respectively are:
The ionic radii of ${O}^{2–},{F}^{–},{\mathrm{Na}}^{+}$ and ${\mathrm{Mg}}^{2+}$ are in the order:
The isomer(s) of $[Co{(N{H}_{3})}_{4}C{l}_{2}]$ that has/ have a $Cl-Co-Cl$ angle of ${90}^{o},$ is/are:
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 process that is NOT endothermic in nature is :
The increasing order of the atomic radii of the following elements is: $(a)C$ $(b)O$ $(c)F$ $(d)Cl$ $(e)Br$