Which one of the following metal complexes is most stable?

The type of hybridisation and magnetic property of the complex [MnCl6]3$$-$$, respectively, are :

The number of geometrical isomers found in the metal complexes [PtCl2(NH3)2], [Ni(CO)4], [Ru(H2O)3Cl3 and [CoCl2(NH3)4]+ respectively, are :

Given below are two statements : Statement I : $$[Mn(CN{)}_6{]}^{3-}$$, $$[Fe(CN{)}_6{]}^{3-}$$ and $$[Co(C_2{O}_4{)}_3{]}^{3-}$$ are d2sp3 hybridised. Statement II : $$[MnCl{)}_6{]}^{3-}$$ and $$[Fe{F}_6{]}^{3-}$$ are paramagnetic and have 4 and 5 unpaired electrons, respectively. In the light of the above statements, choose the correct answer from the options given below :

Indicate the complex/complex ion which did not show any geometrical isomerism :

Arrange the following Cobalt complexes in the order of increasing Crystal Field Stabilization Energy (CFSE) value. Complexes : $$\underset{A}{{[Co{F}_6]}^{3-}},\underset{B}{{[Co{(H_{2}O)}_6]}^{2+}},\underset{C}{{[Co{(N{H}_3)}_6]}^{3+}}and\underset{D}{{[Co{(en)}_3]}^{3+}}$$ Choose the correct option :

The denticity of an organic ligand, biuret is :

Spin only magnetic moment in BM of [Fe(CO)4(C2O4)]+ is :

The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (Mz+) are $$-$$0.8 $$\Delta$$0 and 3.87 BM, respectively. Identify (Mz+) :

The potassium ferrocyanide solution gives a Prussian blue colour, when added to :

The solubility of AgCN in a buffer solution of pH = 3 is x. The value of x is : [Assume : No cyano complex is formed; Ksp(AgCN) = 2.2 $$\times$$ 10$$-$$16 and Ka(HCN) = 6.2 $$\times$$ 10$$-$$10]

The solubility of Ca(OH)2 in water is : [Given : The solubility product of Ca(OH)2 in water = 5.5 $$\times$$ 10$$-$$6]

Which of the following compound CANNOT act as a Lewis base?

Given below are two statements : One is labelled as Assertion A and the other labelled as reason R Assertion A : During the boiling of water having temporary hardness, Mg(HCO3)2 is converted to MgCO3. Reason R : The solubility product of Mg(OH)2 is greater than that of MgCO3. In the light of the above statements, choose the most appropriate answer from the options given below :

A solution is 0.1 M in Cl$$-$$ and 0.001 M in CrO$${}_4^{2-}$$. Solid AgNO3 is gradually added to it. Assuming that the addition does not change in volume and Ksp(AgCl) = 1.7 $$\times$$ 10$$-$$10 M2 and Ksp(Ag2CrO4) = 1.9 $$\times$$ 10$$-$$12 M3. Select correct statement from the following :

Given below are two statements. Statement I : In the titration between strong acid and weak base methyl orange is suitable as an indicator. Statement II : For titration of acetic acid with NaOH phenolphthalein is not a suitable indicator. In the light of the above statements, choose the most appropriate answer from the options given below :

According to Bohr's atomic theory : (A) Kinetic energy of electron is \propto {{{Z^2}} \over {{n^2}}}. (B) The product of velocity (v) of electron and principal quantum number (n), $${}^{\prime }v{n}^{\prime }\propto Z^2$$. (C) Frequency of revolution of electron in an orbit is \propto {{{Z^3}} \over {{n^3}}}. (D) Coulombic force of attraction on the electron is \propto {{{Z^3}} \over {{n^4}}}. Choose the most appropriate answer from the options given below :

The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below : The correct plot for 3s orbital is :

The orbital having two radial as well as two angular nodes is :

Which of the following forms of hydrogen emits low energy $$\beta$$- particles?