| I. The ligand thiosulphato, \[{{S}_{2}}{{O}_{3}}^{2-}\] can give rise to linkage isomers. |
| II. In metallic carbonyls the ligand CO molecule acts both as donor and acceptor. |
| III. The complex \[\left[ Pt\left( Py \right)\left( N{{H}_{3}} \right)\left( N{{O}_{2}} \right)ClBrI \right]\] exists in eight different geometrical isomeric forms |
| IV. The complex ferricyanide ion does not follow effective atomic number (BAN) rule. |
A) I and II only
B) II and IV only
C) I, II and III
D) I, II and IV
Correct Answer: D
Solution :
[d] \[As\left[ Pt\left( py \right)\left( N{{H}_{3}} \right)\left( N{{O}_{2}} \right)ClBr \right]\] exists in 15 different geometrical isomers, each of which would also have an optical isomer so it is incorrect.
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