Latest questions in this category.
[Cr(H₂O)3Cl₃] (octahedral, [Ma₃b3]) has 2 geometrical isomers: facial (fac) and meridional (mer).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Co(NH₃)3Cl₃] (octahedral, [Ma₃b3]) can have a meridional (mer) isomer where 3 Cl− ligands are in a plane.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Co(NH₃)2(H₂O)2Cl₂]+ (octahedral, [Ma₂b2c2]) has 3 geometrical isomers: all cis, cis-trans-cis, and all trans.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
Primary valence is the oxidation state. In [Cr(H₂O)6]Cl₃, Cr is +3 (balancing 3 Cl−), aligning with Werner’s theory.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Ni(NH₃)2Cl₂] (square planar, [Ma₂b2]) has 2 NH₃ and 2 Cl−, allowing cis and trans isomers.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
Ni₂+ with 2 en ligands (4 donor atoms). EAN = 28 − 2 + 2 × 4 = 34.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Co(en)3]3+ (octahedral) with 3 bidentate en ligands lacks symmetry, forming non-superimposable mirror images (enantiomers).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Ni(H₂O)6]2+ (Ni₂+, d8) in an octahedral field has t2g6 eg2, and the d-d transition from t2g to eg absorbs visible light (green color).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
Let the oxidation state of Pt be x. Each Cl− has a charge of −1, and there are 6 Cl− ligands, contributing −6. The overall charge is −2. Thus, x + (−6) = −2, so x = +4.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Co(NH₃)3Cl₂(H₂O)]+ (octahedral, [Ma₃b2c]) has 2 isomers: cis (Cl ligands adjacent) and trans (Cl ligands opposite).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Pt(NH₃)2Cl₂] (square planar, [Ma₂b2]) exhibits 2 geometrical isomers: cis (adjacent ligands) and trans (opposite ligands).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
[Co(NH₃)4Cl₂]+ has 2 isomers (cis, trans). [Co(NH₃)2(H₂O)2Cl₂]+ (Ma₂b2c2) has 3 (all cis, cis-trans-cis, all trans).
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
