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[Co(C(2)O(4))(3)]^(3-) is a...

`[Co(C_(2)O_(4))_(3)]^(3-)` is a

A

`C_(2)O_(4)^(2-)` is strong field ligand hence causes pairing of electrons

B

`C_(2)O_(4)^(2-)` is a bidentate ligand hence causes pairing of electrons

C

`Co^(3+)` is a strong central atom hence in all complexes of `Co^(3+)` electrons are paired

D

`C_(2)O_(4)^(2-)` is a strong field ligand hence causes splitting of d-orbitals .

Text Solution

Verified by Experts

The correct Answer is:
C
`[Co(C_(2)O_(4))_(3)]^(3-) : (##NCERT_OBJ_FING_CHE_XII_C09_E01_081_S01.png" width="80%">
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How many statements is/are correct for given complex [Co(C_(2)O_(4))_(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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The number of coordination isomers possible for [Fe(NH_(3))_(6)]^(3+)[Cr(C_(2)O_(4))_(3)]^(3-) is __________

EAN of Fe in [Fe(C_(2)O_(4)_(3)]^(3-) is .

The anion [Co(C_(2)O_(4))_(3)]^(3-) involves hybridization

(i) What type of isomerism is shown by complex [Co(en)_(3)]Cl_(3) ? (ii) Write the hybridisation and magnetic character of [Co(C_(2)O_(4))_(3)]^(3-) . (At.no. of Co = 27) (iii) Write IUPAC name of the following Complex [Cr(NH_(3))_(3) Cl_(3)]

Name the following coordination entities and draw the structures of their stereoisomers : (i) [Co(en)_(2)Cl_(2)]^(+) (en = ethane-1,2-diamine (ii) [Cr(C_(2)O_(4))_(3)]^(3-) (iii) [ Co(NH_(3))_(3)Cl_(3)] (Atomic number Cr = 24 , Co = 27)

Assertion : Coordination number of Fe and Co in [Fe(C_(2) O_(4))_(3)]^(3-) and [Co(en)_(3)]^(3+) respectively is 6 . Reason : C_(2)O_(4)^(2-) and en (ethane-1 , 2 - diamine) are didentate ligands.

The co-ordination number of Th in [Th (C_(2) O _(4))_(4) ]^(2-) is : (C_(2) O _(4) ^(2-)= Oxalato)

The co-ordination number of Co in [Co(C_(2)O_(4))_(2)Cl_(2)] is