04. Spectrochemical Series, Complex Stability
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COORDINATION COMPOUNDS

274187 For octahedral $\mathrm{Mn}(\mathrm{II})$ and tetrahedral $\mathrm{Ni}(\mathrm{II})$ complexes, consider the following statements,
(I) Both the complexes can be high spin.
(II) $\mathrm{Ni}$
(II) complex can very rarely be low spin.
(III) With strong field ligands, Mn(II) complexes can be low spin.
(IV) Aqueous solution of $\mathrm{Mn}$ (II) ions is yellow in colour.
The correct statements is

1 (I) and (II) only
2 (II), (III) and (IV) only
3 (I), (II) and (III) only
4 (I), (III) and (IV) only
454. Complex(A) has a composition of $\mathrm{H}_{12} \mathrm{O}_{6} \mathrm{Cl}_{3} \mathrm{Cr}$. If the complex on treatment with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ loses $13.5 \%$ of its original mass
COORDINATION COMPOUNDS

274195 Which among the following is a neutral complex?

1 \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
2 \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_2\)
3 \(\left[\operatorname{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
4 \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_2\right]\)
MHT CET-02.05.2019
COORDINATION COMPOUNDS

274297 The complex ion that will lose its crystal field stabilisation energy upon oxidation of its metal to +3 state is

Ignore pairing energy

1 $\left[\mathrm{Co}(\text { phen })_{3}\right]^{2+}$
2 $\left[\mathrm{Ni}(\text { phen })_{3}\right]^{2+}$
3 $\left[\mathrm{Zn}(\text { phen })_{3}\right]^{2+}$
4 $\left[\mathrm{Fe}(\text { phen })_{3}\right]^{2+}$
JEE Main 2019
COORDINATION COMPOUNDS

274255 Ethylenediaminetetraacetate ion is a

1 unidentate ligand
2 bidentate ligand
3 pentadentate ligand
4 hexadentate ligand.
J and K CET-(2013)
COORDINATION COMPOUNDS

274249 $[\text { EDTA }]^{4-}$ is a:

1 monodentate ligand
2 bidentate ligand
3 quadridentate ligand
4 hexadentate ligand
BITSAT-2009
NEET DIGITAL LIBRARY
COORDINATION COMPOUNDS

274187 For octahedral $\mathrm{Mn}(\mathrm{II})$ and tetrahedral $\mathrm{Ni}(\mathrm{II})$ complexes, consider the following statements,
(I) Both the complexes can be high spin.
(II) $\mathrm{Ni}$
(II) complex can very rarely be low spin.
(III) With strong field ligands, Mn(II) complexes can be low spin.
(IV) Aqueous solution of $\mathrm{Mn}$ (II) ions is yellow in colour.
The correct statements is

1 (I) and (II) only
2 (II), (III) and (IV) only
3 (I), (II) and (III) only
4 (I), (III) and (IV) only
454. Complex(A) has a composition of $\mathrm{H}_{12} \mathrm{O}_{6} \mathrm{Cl}_{3} \mathrm{Cr}$. If the complex on treatment with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ loses $13.5 \%$ of its original mass
COORDINATION COMPOUNDS

274195 Which among the following is a neutral complex?

1 \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
2 \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_2\)
3 \(\left[\operatorname{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
4 \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_2\right]\)
MHT CET-02.05.2019
COORDINATION COMPOUNDS

274297 The complex ion that will lose its crystal field stabilisation energy upon oxidation of its metal to +3 state is

Ignore pairing energy

1 $\left[\mathrm{Co}(\text { phen })_{3}\right]^{2+}$
2 $\left[\mathrm{Ni}(\text { phen })_{3}\right]^{2+}$
3 $\left[\mathrm{Zn}(\text { phen })_{3}\right]^{2+}$
4 $\left[\mathrm{Fe}(\text { phen })_{3}\right]^{2+}$
JEE Main 2019
COORDINATION COMPOUNDS

274255 Ethylenediaminetetraacetate ion is a

1 unidentate ligand
2 bidentate ligand
3 pentadentate ligand
4 hexadentate ligand.
J and K CET-(2013)
COORDINATION COMPOUNDS

274249 $[\text { EDTA }]^{4-}$ is a:

1 monodentate ligand
2 bidentate ligand
3 quadridentate ligand
4 hexadentate ligand
BITSAT-2009
Join With Us for More Updates
COORDINATION COMPOUNDS

274187 For octahedral $\mathrm{Mn}(\mathrm{II})$ and tetrahedral $\mathrm{Ni}(\mathrm{II})$ complexes, consider the following statements,
(I) Both the complexes can be high spin.
(II) $\mathrm{Ni}$
(II) complex can very rarely be low spin.
(III) With strong field ligands, Mn(II) complexes can be low spin.
(IV) Aqueous solution of $\mathrm{Mn}$ (II) ions is yellow in colour.
The correct statements is

1 (I) and (II) only
2 (II), (III) and (IV) only
3 (I), (II) and (III) only
4 (I), (III) and (IV) only
454. Complex(A) has a composition of $\mathrm{H}_{12} \mathrm{O}_{6} \mathrm{Cl}_{3} \mathrm{Cr}$. If the complex on treatment with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ loses $13.5 \%$ of its original mass
COORDINATION COMPOUNDS

274195 Which among the following is a neutral complex?

1 \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
2 \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_2\)
3 \(\left[\operatorname{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
4 \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_2\right]\)
MHT CET-02.05.2019
COORDINATION COMPOUNDS

274297 The complex ion that will lose its crystal field stabilisation energy upon oxidation of its metal to +3 state is

Ignore pairing energy

1 $\left[\mathrm{Co}(\text { phen })_{3}\right]^{2+}$
2 $\left[\mathrm{Ni}(\text { phen })_{3}\right]^{2+}$
3 $\left[\mathrm{Zn}(\text { phen })_{3}\right]^{2+}$
4 $\left[\mathrm{Fe}(\text { phen })_{3}\right]^{2+}$
JEE Main 2019
COORDINATION COMPOUNDS

274255 Ethylenediaminetetraacetate ion is a

1 unidentate ligand
2 bidentate ligand
3 pentadentate ligand
4 hexadentate ligand.
J and K CET-(2013)
COORDINATION COMPOUNDS

274249 $[\text { EDTA }]^{4-}$ is a:

1 monodentate ligand
2 bidentate ligand
3 quadridentate ligand
4 hexadentate ligand
BITSAT-2009
For More Updates join with Us
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COORDINATION COMPOUNDS

274187 For octahedral $\mathrm{Mn}(\mathrm{II})$ and tetrahedral $\mathrm{Ni}(\mathrm{II})$ complexes, consider the following statements,
(I) Both the complexes can be high spin.
(II) $\mathrm{Ni}$
(II) complex can very rarely be low spin.
(III) With strong field ligands, Mn(II) complexes can be low spin.
(IV) Aqueous solution of $\mathrm{Mn}$ (II) ions is yellow in colour.
The correct statements is

1 (I) and (II) only
2 (II), (III) and (IV) only
3 (I), (II) and (III) only
4 (I), (III) and (IV) only
454. Complex(A) has a composition of $\mathrm{H}_{12} \mathrm{O}_{6} \mathrm{Cl}_{3} \mathrm{Cr}$. If the complex on treatment with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ loses $13.5 \%$ of its original mass
COORDINATION COMPOUNDS

274195 Which among the following is a neutral complex?

1 \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
2 \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_2\)
3 \(\left[\operatorname{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
4 \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_2\right]\)
MHT CET-02.05.2019
COORDINATION COMPOUNDS

274297 The complex ion that will lose its crystal field stabilisation energy upon oxidation of its metal to +3 state is

Ignore pairing energy

1 $\left[\mathrm{Co}(\text { phen })_{3}\right]^{2+}$
2 $\left[\mathrm{Ni}(\text { phen })_{3}\right]^{2+}$
3 $\left[\mathrm{Zn}(\text { phen })_{3}\right]^{2+}$
4 $\left[\mathrm{Fe}(\text { phen })_{3}\right]^{2+}$
JEE Main 2019
COORDINATION COMPOUNDS

274255 Ethylenediaminetetraacetate ion is a

1 unidentate ligand
2 bidentate ligand
3 pentadentate ligand
4 hexadentate ligand.
J and K CET-(2013)
COORDINATION COMPOUNDS

274249 $[\text { EDTA }]^{4-}$ is a:

1 monodentate ligand
2 bidentate ligand
3 quadridentate ligand
4 hexadentate ligand
BITSAT-2009
NEET DIGITAL LIBRARY
COORDINATION COMPOUNDS

274187 For octahedral $\mathrm{Mn}(\mathrm{II})$ and tetrahedral $\mathrm{Ni}(\mathrm{II})$ complexes, consider the following statements,
(I) Both the complexes can be high spin.
(II) $\mathrm{Ni}$
(II) complex can very rarely be low spin.
(III) With strong field ligands, Mn(II) complexes can be low spin.
(IV) Aqueous solution of $\mathrm{Mn}$ (II) ions is yellow in colour.
The correct statements is

1 (I) and (II) only
2 (II), (III) and (IV) only
3 (I), (II) and (III) only
4 (I), (III) and (IV) only
454. Complex(A) has a composition of $\mathrm{H}_{12} \mathrm{O}_{6} \mathrm{Cl}_{3} \mathrm{Cr}$. If the complex on treatment with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$ loses $13.5 \%$ of its original mass
COORDINATION COMPOUNDS

274195 Which among the following is a neutral complex?

1 \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right] \mathrm{Cl}_3\)
2 \(\left[\mathrm{Ni}\left(\mathrm{NH}_3\right)_6\right] \mathrm{Cl}_2\)
3 \(\left[\operatorname{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]\)
4 \(\mathrm{K}\left[\mathrm{Ag}(\mathrm{CN})_2\right]\)
MHT CET-02.05.2019
COORDINATION COMPOUNDS

274297 The complex ion that will lose its crystal field stabilisation energy upon oxidation of its metal to +3 state is

Ignore pairing energy

1 $\left[\mathrm{Co}(\text { phen })_{3}\right]^{2+}$
2 $\left[\mathrm{Ni}(\text { phen })_{3}\right]^{2+}$
3 $\left[\mathrm{Zn}(\text { phen })_{3}\right]^{2+}$
4 $\left[\mathrm{Fe}(\text { phen })_{3}\right]^{2+}$
JEE Main 2019
COORDINATION COMPOUNDS

274255 Ethylenediaminetetraacetate ion is a

1 unidentate ligand
2 bidentate ligand
3 pentadentate ligand
4 hexadentate ligand.
J and K CET-(2013)
COORDINATION COMPOUNDS

274249 $[\text { EDTA }]^{4-}$ is a:

1 monodentate ligand
2 bidentate ligand
3 quadridentate ligand
4 hexadentate ligand
BITSAT-2009