1. Tardigrade
  2. Question
  3. Chemistry
  4. How many statements is/are correct for given complex [ mathrmCo( mathrmC2 mathrmO4)3]3- i) It contain negative ligands only ii) The oxidation state of central metal atom is +3 iii) It is optically active iv) Due to chelation the stability of the complex increases v) It exhibit geometrical isomerism vi) It is octahedral with d 2 sp 3 hybridization. vii) All oxalate ligands are replaced by ethylenediamine, then complex do not show optical activity.

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Q. How many statements is/are correct for given complex $\left[\mathrm{Co}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$
i) It contain negative ligands only

ii) The oxidation state of central metal atom is +3

iii) It is optically active

iv) Due to chelation the stability of the complex increases

v) It exhibit geometrical isomerism

vi) It is octahedral with $d ^{2} sp ^{3}$ hybridization.

vii) All oxalate ligands are replaced by ethylenediamine, then complex

do not show optical activity.

NTA AbhyasNTA Abhyas 2020Coordination Compounds

Solution:

i) It contain negative ligands only

ii) The oxidation state of central metal atom is +3

iii) It is optically active

iv) Due to chelation the stability of the complex increases

v) It is an octahedral with $d ^{2} sp ^{3}$ hybridization.

the above statement are correct.