Which of the following statement is/are correct ? I . The ligand thiosulphate , 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 [Pt(Py)(NH_(3))(NO_(2))ClBrI] exists in eight different geometrical isomeric forms . IV. The complex ferricyanide ion does not follow effective atomic number (EAN) rule .

Which of the following statement is/are correct ? I . The ligand thios

1.	Which of the following statement is/are correct ? I . The ligand thiosulphate , 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 [Pt(Py)(NH_(3))(NO_(2))ClBrI] exists in eight different geometrical isomeric forms . IV. The complex ferricyanide ion does not follow effective atomic number (EAN) rule .
Answer» I and II only II and IV only I, II and III I, II and IV Solution :As`[Pt(Py)(Nh_(3))(NO_(2))ClBr]`EXISTS in 15 different geometrical isomers, each of which would ALSO have an optical ISOMER so it is incorrect.

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