Chemical Bonding
The compressibility factor of an ideal gas is:
The type of hybridization involved in octahedral complex is :
Option (C) is correct. The hybridisation in octahedral complexes are $$d^2sp^3$$ or $$sp^3d^2$$. All the complex ions having a coordination number of central metal atom as six show octahedral geometry. This octahedral geometry arises due to $$d^2sp^3$$ or $$sp^3d^2$$ hybridisation of the central metal atom or ion. The type of hybridisation (i.e. $$d^2sp^3$$ or $$sp^3d^2$$) depends on the no. of unpaired or paired electrons present in the complex ion. Octahedral complexes in which the central atom is $$d^2sp^3$$ are called inner -orbital octahedral complexes while octahedral complexes in which the central atom is $$sp^3d^2$$ are called outer -orbital octahedral complexes.
The compressibility factor of an ideal gas is:
Barium ions, $$CN^-$$ and $$Co^{2+}$$ form an ionic complex. If this complex is 75% ionised in aqueous solution with Van't Hoff factor (i) equal to four and paramagnetic moment is found to be 1.73 BM (due to spin only) then the hybridisation state to Co (II) in the complex will be :
Select correct statement(s) regarding given complexes :
In $${ \left[ Fe{ CN }_{ 5 }(NO) \right] }^{ 2- }$$, $$Fe$$ has $$+2$$ state. It cannot be decided by
An octahedral complex of $$Co^{3+}$$ is diamagnetic. The hybridisation involved in the formation of the complex is:
In a fuel cell, methanol is used as fuel and oxygen gas is used as an oxidizer. The reaction is: $$\mathrm {C}\mathrm{H}_{3}\mathrm{O}\mathrm{H}(l)+\dfrac{3}{2}\mathrm{O}_{2}(\mathrm{g})\rightarrow \mathrm{C}\mathrm{O}_{2}(\mathrm{g})+2\mathrm{H}_{2}\mathrm{O}(l)$$ At $$298\ \mathrm{K}$$, standard Gibb's energies of formation for $$\mathrm{C}\mathrm{H}_{3}\mathrm{O}\mathrm{H}(l),\ \mathrm{H}_{2}\mathrm{O}(l)$$ and $$\mathrm{C}\mathrm{O}_{2}(\mathrm{g})$$ are$$-166.2, - 237.2$$ and $$-394.4\ \mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}1^{-1}$$ respectively. If standard enthalpy of combustion of methanol is $$-726\ \mathrm{k}\mathrm{J}\mathrm{m}\mathrm{o}1^{-1}$$, efficiency of the fuel cell will be:
The pair of metal ions that can give a spin only magnetic moment of $$3.9\ BM$$ for the complex $$[M(H_{2}O)_{6}]Cl_{2}$$, is:
Nickel $$(Z=28)$$ combines with a uninegative monodentate ligand to form a diamagnetic complex $$[NiX_4]^{2-}$$. The hybridization involved and the number of unpaired electrons present in the complex is respectively:
Which of the following is paramagnetic?
The hybridization involved in complex $$[Ni(CN)_4]^{2-}$$ is: [Atomic number of Ni $$=28]$$