✓ Board-verified
Chemistry · 2023 · 3 marks
CBSE 2023 · Region 5 · Set 2 · Q27
(a) On the basis of crystal field theory write the electronic configuration for d^5 ion with a weak ligand for which Δ_0< P. (b) Explain [ Fe ( CN…
(a)
On the basis of crystal field theory write the electronic configuration for $\displaystyle \mathrm{d}^{5}$ ion with a weak ligand for which $\displaystyle \Delta_{0}<\mathrm{P}$.
(b)
Explain $\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ is an inner orbital complex whereas $\displaystyle \left[\mathrm{FeF}_{6}\right]^{3-}$ is an outer orbital complex. [Atomic number : $\displaystyle \mathrm{Fe}=26$ ]
Marking-scheme solution
(a)
\(\displaystyle t_{2 g}{ }^{3} e_{g}{ }^{2}\)
(b)
\(\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}: \mathrm{CN}^{-}\)is a strong field ligand / \(\displaystyle \mathrm{CN}^{-}\)causes the pairing of the unpaired \(\displaystyle 3 \mathrm{d}\) electrons.
\(\displaystyle \left[\mathrm{FeF}_{6}\right]^{3-}: \mathrm{F}^{-}\)is a weak field ligand / \(\displaystyle \mathrm{F}^{-}\)does not cause the pairing of the 3d electrons.
All Coordination Compounds questions2023 question paperNCERT solutions: Coordination CompoundsPractice Coordination Compounds →
More from Coordination Compounds
- [Co(NH_3)_6]^3+ is diamagnetic whereas [CoF_6]^3- is paramagnetic. Justify the statement. [Atomic number of Co=27 ] Write the electronic…2026
- Draw the geometrical isomers of the given complex: [Pt(en)_2 Cl_2]^2+ Write the electronic configuration for d^4 ion if Δ_0<P on the basis of crystal…2024
- On the basis of crystal field theory, write the electronic configuration for d^4 with a strong field ligand for which Δ_0>P. A solution of [Ni(H_2…2023
- Out of the following statements, the incorrect statement is:2025
- The secondary valency of Co in [Co(en)_3]^3+ is2026
- The Valence Bond Theory (VBT) explains the formation, magnetic behaviour and geometrical shapes of coordination compounds whereas 'The Crystal Field…2024
- The formula of the complex Iron (III) hexacyanidoferrate (II) is:2023
- [Fe(H_2 O)_6]^2+ is paramagnetic whereas [Fe(CO)_5] is diamagnetic. Justify the statement. [Atomic number of Fe=26 ] 2+1 On the basis of crystal…2026
CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.