JEE Advanced 2015 · Paper 1

The total number of lone pairs of electrons in N₂O₃ is

For the octahedral complexes of Fe³⁺ in SCN⁻ (thiocyanato-S) and in CN⁻ ligand environments, the difference between the spin-only magnetic moments in Bohr magnetons (when approximated to the nearest integer) is [Atomic number of Fe = 26]

Among the triatomic molecules/ions, BeCl₂, N₃⁻, N₂O, NO₂⁺, O₃, SCl₂, ICl₂⁻, I₃⁻ and XeF₂, the total number of linear molecule(s)/ion(s) where the hybridization of the central atom does not have contribution from the d-orbital(s) is [Atomic number : S = 16, Cl = 17, I = 53 and Xe = 54]

Not considering the electronic spin, the degeneracy of the second excited state (n = 3) of H atom is 9, while the degeneracy of the second excited state of H⁻ is

All the energy released from the reaction X → Y, ΔᵣG° = −193 kJ mol⁻¹ is used for oxidizing M⁺ as M⁺ → M³⁺ + 2e⁻, E° = −0.25 V. Under standard conditions, the number of moles of M⁺ oxidized when one mole of X is converted to Y is [F = 96500 C mol⁻¹]

If the freezing point of a 0.01 molal aqueous solution of a cobalt(III) chloride-ammonia complex (which behaves as a strong electrolyte) is −0.0558 °C, the number of chloride(s) in the coordination sphere of the complex is [Kf of water = 1.86 K kg mol⁻¹]