1) chemistry - xii
coordination compounds - nomenclature
1. Write the IUPAC names of the following coordination compounds:
(i) [Pt (NH3)2Cl(NO2)] (ii) K3[Cr(C2O4)3]
(iii) [CoCl2 (en)2] Cl (iv) [Co(NH3)5CO3] Cl
2. Write the IUPAC names of the following
(i) [NI(CN)4]2– (ii) [Co(NH3)5CO3] Cl (iii) [Cr(H2O)5 SCN]+
(iv) [Cr(H2O5)SCN]+ (v) Ni(CO)4 (vi) K3[Co(NO2)6]
(vii) [Co(en)2Cl(ONO)]+ (viii) K[Pt(NH3)Cl3]
3. Write down the formulae of the following coordination compounds
(i) Tetraammineaquachlorido cobalt (III) chloride
(ii) Potassium tetrahydroxozincate (II)
(iii) Potassium trioxalatoaluminate (III)
(iv) Dichloridobis (ethane-1, 2-diamine) cobalt (III)
(v) Tetracharbonylnickel (O)
(vi) Sodium diaquabis (oxalato) ferrate (III)
(vii) Tetraammine diaquacobalt (III) bromide
4. Write down the formulae of the following coordination compounds
(i) Sodium ethane-1,2-diaminetetraacetato chromate (II)
(ii) Chlorido-bis (ethane-1,2-diamine) nitrito-N cobalt (III) ion
(iii) Bis (acetylacetonato) oxovanadium (IV)
(iv) Potassium pentacyanonitrosylcobaltate (III)
5. What is the coordination number of the central metal ions in the following complexes?
(i) [Cu(NH3)4]2+ (ii) [Fe(C2O4)3]3–
(iii) [Pt(en)2Cl2] (iv) Mo(CN)8]4–
–
(v) [Fe(EDTA)] (vi) [Pd(H2O)2(ONO)2I2]
6. Calculate the oxidation state of the central metal atom in the following
(i) [Co(NH3)5Cl]2+ (ii) K4[Fe(CN)6]
(iii) [Co(NO2)2 (py)2(NH3)2] NO3 (iv) Ni(CO)4
–
(v) [Fe(EDTA)]
7. Give the IUPAC names of the following compounds:
(i) K3[Al(C2O4)3] (ii) [Pt(NH3)4 (NO2)Cl] SO4
(iii) K3[Cr(CN)6] (iv) [Co(NH3)5ONO]Cl2
(v) [Cr(NH3)5CO3]Cl (vi) [Cr(NH3)5(NCS)][ZnCl4]
(vii) KAu(CN)2
8. Write the formulae for the following coordination compounds.
(i) Tetraamminediaquacobalt (III) chloride
(ii) Potassium tetracyanonickelate (II)
(iii) Tris (ethane-1,2-diamine) chromium (III) chloride
(iv) Amminebromidochloridonitrito-N-platinate (II)
(v) Dichlorido bis (ethane-1, 2-diamine)-platinum (IV) nitrate
(vi) Iron (III) hexacyanoferrate (II)
9. Write the IUPAC name of the following coordination compounds
(i) [Co(NH3)6]Cl3 (ii) [Co(NH3)5Cl]Cl2
(iii) K3[Fe(CN)6] (iv) K3[Fe(C2O4)3]
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2) chemistry - xii
coordination compounds - nomenclature
(v) K2[PdCl4] (vi) [Pt(NH3)2Cl(NH2CH3)]Cl
10. FeSO4 solution when mixed with (NH4)2 SO4 solution in 1 : 1 molar ratio gives the test of Fe2+ but
CuSO4 solution mixed with aqueous ammonia in 1 : 4 molar ratio does not give the test of Cu2+
ion. Explain why.
11. Specify the oxidation numbers of the metals in the following coordination entities:
(a) [Co (H2O)(CN) (en)2]2+ (b) [PtCl4]2–
(c) [Cr(NH3)3Cl3] (d) [CoBr2 (en)2]+
(e) K3[Fe(CN)6]
12. Using IUPAC norms, write the formulae of the following
(a) Tetrahydroxozincate (II)
(b) Potassium tetrachloridopalladate (II)
(c) Diamminedichloridoplatinum (II)
(d) Potassium tetracyanonickelate (II)
(e) Pentaamminenitrito-O-cobalt (III)
(f) Hexaamminecobalt (III) sulphate
(g) Potassiumtrioxalatochromate (III)
(h) Hexaammineplatinum (IV)
(i) Tetrabromidocuprate (II)
(j) Pentaamminenitrito-N-cobalt(III)
13. Using IUPAC norms, write the systematic names of the following
(a) [Co(NH3)6] Cl3 (b) [Co (NH3)4 CINO2]Cl
(c) [Ni(NH3)6] Cl2 (d) [Pt(NH3)2Cl(NH2CH3)] Cl
2+
(e) [Mn(H2O)6] (f) [Co (en)3]3+
(g) [Ti (H2O)6]3+ (h) NiCl4]2–
(i) [Ni(CO)4]
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