✓ Board-verified
Chemistry · 2026 · 1 mark
Coordination CompoundsDefinitions of Some Important Terms Pertaining to Coordination Compounds1 markApplymcq
CBSE 2026 · Region 3 · Set 1 · Q3
The oxidation number of Co in [ Co ( en )_3]_2( SO_4)_3 is:
The oxidation number of Co in $\displaystyle \left[\mathrm{Co}(\mathrm{en})_{3}\right]_{2}\left(\mathrm{SO}_{4}\right)_{3}$ is :
Official answer
(A)
$\displaystyle +3$
All Coordination Compounds questions2026 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 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.