With reference to Valence Bond Theory in co-ordination compounds which of the following statements is//are, correct? I. `VBT` does not explain the colour exhibited by co-ordination compounds. II. `VBT` explains and gives quantitative interpetation of magnetic data. III. `VBT` does not distinguish between weak field ligand and strong field ligand.
The correct statement among I to III are: (I) Valence bond theory cannot explain the color exhibited by transition metal complexes (II) Valence bond theory can predict quantitatively the magnetic properties of transition metal complexes (III) Valence bond theory cannot distinguish ligands as weak and strong field ones
Explain the following types of isomerism in co-ordination compounds. (i) Ionisation isomerism (ii) Hydrate isomerism.
Velence bond theroy describes the bonding in complexs in terms of coordinate -covalent bond resulting from overlap filled ligand orbitals with vacant metal hybrid orbitals This theory explains magnetic behaviour and geometrical shape of coordination compounds Magnetic moment of a complex compound can be determined experimentally and theoretically by using spin only formula Magnetic moment sqrtn (n+2)BM (where n = No. unpaired electrons) . The value of of spin only magnetic moment for octahedral complex of the following configuration is 2.84BM The correct statement is (a) d^(4) (in weak field ligand) (b) d^(2) (in weak field and in strong field ligand) (c) d^(3) (in weak field and in strong field ligand) (d) d^(5) (in strong field ligand) .
