✓ Board-verified
Chemistry · 2025 · 3 marks
CBSE 2025 · Region 2 · Set 1 · Q25
Using valence bond theory, explain the hybridization and magnetic character of the following: 2 × 1 1/2= 3 (a) [ Co ( NH_3)_6]^3+ (b) [ Ni ( CO )_4]…
Using valence bond theory, explain the hybridization and magnetic character of the following : $\displaystyle \mathbf{2} \times \mathbf{1} \frac{\mathbf{1}}{\mathbf{2}}=\mathbf{3}$
(a)
$\displaystyle \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$
(b)
$\displaystyle \left[\mathrm{Ni}(\mathrm{CO})_{4}\right]$ [At. no. : $\displaystyle \mathrm{Co}=27, \mathrm{Ni}=28$ ]
Marking-scheme solution
(a)
Hybridization: d2sp3
Magnetic character: Diamagnetic.
(b)
Hybridization: sp3
All Coordination Compounds questions2025 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 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.