23 public questions tagged with this topic.
[Co(NH₃)6]Cl₃ dissociates into [Co(NH₃)6]3+ and 3 Cl−, producing 4 ions total, but the sphere itself is associated with 3 counter ions.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Werner's Theory and Definitions - Ligands Coordination Number
Secondary valence is the coordination number. [Fe(H₂O)6]3+ has 6 ligands.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Werner's Theory and Definitions - Ligands Coordination Number
[Co(NH₃)4Cl₂]+ (octahedral, 6 ligands) shows cis and trans isomers.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Werner's Theory and Definitions - Ligands Coordination Number
Secondary valence is the coordination number. [Cu(NH₃)4]SO₄ has 4 NH₃ ligands, giving a coordination number of 4.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Werner's Theory and Definitions - Ligands Coordination Number
In [Ni(NH₃)4]2+, Ni is +2 (oxidation state), and the coordination number is 4. None match here, but [Ni(NH₃)4]2+ fits better conceptually.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Nomenclature of Coordination Compounds
In [Co(NH₃)6]Cl₃, primary valence (oxidation state) = +3, secondary valence (coordination number) = 6. 6 = 2 × 3.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Nomenclature of Coordination Compounds
[Co(en)2Cl₂]+ (octahedral) can form a trans isomer (symmetric) and a cis isomer (chiral, non-superimposable), showing optical isomerism.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Optical Isomerism and Linkage Ionisation Solvate
[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
[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
In [Fe(H₂O)5NO]+, NO is NO+ (+1), 5 H₂O are neutral. Charge = +1, so x + 0 + 1 = +1, x = 0 is incorrect; typically Fe is +2 with NO+.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
In [Ni(CN)4]2−, each CN− is −1, totaling −4 for 4 ligands. The overall charge is −2. Thus, x + (−4) = −2, so x = +2.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
In [Fe(en)(H₂O)3Cl]+, en (bidentate) has 2 N atoms, 3 H₂O have 3 O atoms, and 1 Cl− has 1 Cl atom. Total = 2 + 3 + 1 = 6.
Ref: NCERT Class 12 Chemistry > Chapter 5: Coordination Compounds > Topic: Isomerism - Geometrical Isomerism in Coordination Compounds
