PG2021-Coordination Chemistry- Quiz-II

Outer sphere mechanism is direct electron transfer reactions

• True

• False

The minimum trans- effect is shown by

• CN^-

• C₂H₄

• H₂O

• NH₃

Tricholoronitritoplatnate(II) on treatment with NH₃ gives __________

• Trans-isomer

• cis isomer       

• cis and trans isomer       

• no reaction

The rate of transfer of electron from the reductant to oxidant is slow, if the electron to be

transferred is present in eg orbital

• True

• False

A reaction sequence in which an intermediate of reduced coordination number is formed

by the departure of the leaving group is called

• An associative mechanism

• a dissociative mechanism

• an interchange mechanism

• all the above

The rate-determining step in octahedral complex substitution is

• An associative step

• a dissociative step

• an interchange step

• Product formation step

Acid hydrolysis of octahedral complexes proceeds by

• S _E ¹

• S _E ²

• S _N ¹

• S _N ²

Electron transfer is fast if concentration of the ligand is

• Zero

• Low

• High

• Medium

Redox reactions in complexes are known as _____________

• electron transferreactions.

• proton

  transfer

Which ordering correctly describes the tendency of a ligand to direct ligand substitution in a

square planar complex to a position opposite to itself?