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Coordination Compounds
Question
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Coordination compound has great importance in biological systems. In this context which of the following statements is incorrect?

  • Chlorophylls are green pigments in plants and contain calcium

  • Carboxypeptidase – A is an enzyme and contains zinc

  • Cyanocobalamin is B12 and contains cobalt

  • Haemoglobin is the red pigment of blood and contains iron

Answer

A.

Chlorophylls are green pigments in plants and contain calcium

Chlorophyll contains Mg not Ca.

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Some More Questions From Coordination Compounds Chapter

Explain on the basis of valence bond theory that [Ni(CN)4]2–  ion with square planar is diamagnetic and the [NiCl4]2– ion with tetrahedral geometry is paramagnetic.

Predict the number of unpaired electrons in the square planar [Pt(CN)4,]2– ion.

The hexaquo manganese(II) ion contains five unpaired electrons, while the hexacynoion contains only one unpaired electron. Explain using crystal field theory.

Calculate the overall complex dissociation equilibrium constant for the Cu(NH3)42+ion, given β4 for this complex is 2.1 x 1013.

Identify the ligands from the following coordination compounds:
(a)    [Co(en)2Cl(NO2)2]
(b)    K[Co(CN)(CO2)(NO)]
(c)    K3[Al(OH)6]
(d)    [Co(H2O)2(NH3)4](OH)3

Write IUPAC name of the following complexes:
(a)    [Fe(H2O)6]SO4
(b)    [Cu(en)2(NO3)2