NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII09:COORDINATION COMPOUNDS
321885
Assertion : Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason : Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}\), iron is \(\mathrm{Fe}^{2+}\) with the configuration of \(3 d^{6} 4 s^{0} 4 p^{0}\) In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\), iron is \(\mathrm{Fe}^{+3}\) with the configuration of \(3 \mathrm{~d}^{5} 4 \mathrm{~s}^{0} 4 \mathrm{p}^{0}\) In ferrocyanide ion, the oxidation state of \(\mathrm{Fe}\) is +2 and, in ferricyanide ion, the oxidation number of \(\mathrm{Fe}\) is +3 . Generally, the higher the oxidation state of the metal, the greater the crystal field splitting. It means crystal field splitting in ferrocyanide ion is lower than that in ferricyanide ion. So option (3) is correct.
CHXII09:COORDINATION COMPOUNDS
321886
Identify highest field strength ligand from the following
The correct order of decreasing field strength according to spectrochemical series is \({\mathrm{\mathrm{CO}>\mathrm{H}_{2} \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}}}\) The complete series is \[\begin{array}{l} {{\rm{I}}^ - } < {\rm{B}}{{\rm{r}}^ - } < {\rm{SC}}{{\rm{N}}^ - } < {\rm{C}}{{\rm{l}}^ - } < {{\rm{S}}^{ - 2}} < {{\rm{F}}^ - }\\ < {\rm{O}}{{\rm{H}}^ - } < {{\rm{C}}_2}{\rm{O}}_4^{2 - } < {{\rm{H}}_2}{\rm{O}} < {\rm{NC}}{{\rm{S}}^ - }\\ < {\rm{EDT}}{{\rm{A}}^{ - 4}} < {\rm{N}}{{\rm{H}}_3} < {\rm{en}} < {\rm{C}}{{\rm{N}}^ - } < {\rm{CO}}\\ {\rm{So, the \,correct\, option\, is\, (4)}}{\rm{. }} \end{array}\]
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS
321888
Which of the following cannot be explained by crystal field theory?
1 Magnetic properties of transition metal complexes
2 The order of spectrochemical series
3 Stability of metal complexes
4 Colour of metal complexes
Explanation:
Crystal field theory explains about the structure, magnetic properties and colour of metal complexes. It also explains the stability of metal complexes. Crystal field theory introduces spectrochemical series based upon the experimental values of \(\Delta\) but can't explain it's order.
321885
Assertion : Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason : Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}\), iron is \(\mathrm{Fe}^{2+}\) with the configuration of \(3 d^{6} 4 s^{0} 4 p^{0}\) In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\), iron is \(\mathrm{Fe}^{+3}\) with the configuration of \(3 \mathrm{~d}^{5} 4 \mathrm{~s}^{0} 4 \mathrm{p}^{0}\) In ferrocyanide ion, the oxidation state of \(\mathrm{Fe}\) is +2 and, in ferricyanide ion, the oxidation number of \(\mathrm{Fe}\) is +3 . Generally, the higher the oxidation state of the metal, the greater the crystal field splitting. It means crystal field splitting in ferrocyanide ion is lower than that in ferricyanide ion. So option (3) is correct.
CHXII09:COORDINATION COMPOUNDS
321886
Identify highest field strength ligand from the following
The correct order of decreasing field strength according to spectrochemical series is \({\mathrm{\mathrm{CO}>\mathrm{H}_{2} \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}}}\) The complete series is \[\begin{array}{l} {{\rm{I}}^ - } < {\rm{B}}{{\rm{r}}^ - } < {\rm{SC}}{{\rm{N}}^ - } < {\rm{C}}{{\rm{l}}^ - } < {{\rm{S}}^{ - 2}} < {{\rm{F}}^ - }\\ < {\rm{O}}{{\rm{H}}^ - } < {{\rm{C}}_2}{\rm{O}}_4^{2 - } < {{\rm{H}}_2}{\rm{O}} < {\rm{NC}}{{\rm{S}}^ - }\\ < {\rm{EDT}}{{\rm{A}}^{ - 4}} < {\rm{N}}{{\rm{H}}_3} < {\rm{en}} < {\rm{C}}{{\rm{N}}^ - } < {\rm{CO}}\\ {\rm{So, the \,correct\, option\, is\, (4)}}{\rm{. }} \end{array}\]
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS
321888
Which of the following cannot be explained by crystal field theory?
1 Magnetic properties of transition metal complexes
2 The order of spectrochemical series
3 Stability of metal complexes
4 Colour of metal complexes
Explanation:
Crystal field theory explains about the structure, magnetic properties and colour of metal complexes. It also explains the stability of metal complexes. Crystal field theory introduces spectrochemical series based upon the experimental values of \(\Delta\) but can't explain it's order.
321885
Assertion : Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason : Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}\), iron is \(\mathrm{Fe}^{2+}\) with the configuration of \(3 d^{6} 4 s^{0} 4 p^{0}\) In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\), iron is \(\mathrm{Fe}^{+3}\) with the configuration of \(3 \mathrm{~d}^{5} 4 \mathrm{~s}^{0} 4 \mathrm{p}^{0}\) In ferrocyanide ion, the oxidation state of \(\mathrm{Fe}\) is +2 and, in ferricyanide ion, the oxidation number of \(\mathrm{Fe}\) is +3 . Generally, the higher the oxidation state of the metal, the greater the crystal field splitting. It means crystal field splitting in ferrocyanide ion is lower than that in ferricyanide ion. So option (3) is correct.
CHXII09:COORDINATION COMPOUNDS
321886
Identify highest field strength ligand from the following
The correct order of decreasing field strength according to spectrochemical series is \({\mathrm{\mathrm{CO}>\mathrm{H}_{2} \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}}}\) The complete series is \[\begin{array}{l} {{\rm{I}}^ - } < {\rm{B}}{{\rm{r}}^ - } < {\rm{SC}}{{\rm{N}}^ - } < {\rm{C}}{{\rm{l}}^ - } < {{\rm{S}}^{ - 2}} < {{\rm{F}}^ - }\\ < {\rm{O}}{{\rm{H}}^ - } < {{\rm{C}}_2}{\rm{O}}_4^{2 - } < {{\rm{H}}_2}{\rm{O}} < {\rm{NC}}{{\rm{S}}^ - }\\ < {\rm{EDT}}{{\rm{A}}^{ - 4}} < {\rm{N}}{{\rm{H}}_3} < {\rm{en}} < {\rm{C}}{{\rm{N}}^ - } < {\rm{CO}}\\ {\rm{So, the \,correct\, option\, is\, (4)}}{\rm{. }} \end{array}\]
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS
321888
Which of the following cannot be explained by crystal field theory?
1 Magnetic properties of transition metal complexes
2 The order of spectrochemical series
3 Stability of metal complexes
4 Colour of metal complexes
Explanation:
Crystal field theory explains about the structure, magnetic properties and colour of metal complexes. It also explains the stability of metal complexes. Crystal field theory introduces spectrochemical series based upon the experimental values of \(\Delta\) but can't explain it's order.
321885
Assertion : Potassium ferrocyanide is diamagnetic whereas potassium ferricyanide is paramagnetic. Reason : Crystal field splitting in ferrocyanide ion is greater than that of ferricyanide ion.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}\), iron is \(\mathrm{Fe}^{2+}\) with the configuration of \(3 d^{6} 4 s^{0} 4 p^{0}\) In the complex \(\left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}\), iron is \(\mathrm{Fe}^{+3}\) with the configuration of \(3 \mathrm{~d}^{5} 4 \mathrm{~s}^{0} 4 \mathrm{p}^{0}\) In ferrocyanide ion, the oxidation state of \(\mathrm{Fe}\) is +2 and, in ferricyanide ion, the oxidation number of \(\mathrm{Fe}\) is +3 . Generally, the higher the oxidation state of the metal, the greater the crystal field splitting. It means crystal field splitting in ferrocyanide ion is lower than that in ferricyanide ion. So option (3) is correct.
CHXII09:COORDINATION COMPOUNDS
321886
Identify highest field strength ligand from the following
The correct order of decreasing field strength according to spectrochemical series is \({\mathrm{\mathrm{CO}>\mathrm{H}_{2} \mathrm{O}>\mathrm{F}^{-}>\mathrm{S}^{2-}}}\) The complete series is \[\begin{array}{l} {{\rm{I}}^ - } < {\rm{B}}{{\rm{r}}^ - } < {\rm{SC}}{{\rm{N}}^ - } < {\rm{C}}{{\rm{l}}^ - } < {{\rm{S}}^{ - 2}} < {{\rm{F}}^ - }\\ < {\rm{O}}{{\rm{H}}^ - } < {{\rm{C}}_2}{\rm{O}}_4^{2 - } < {{\rm{H}}_2}{\rm{O}} < {\rm{NC}}{{\rm{S}}^ - }\\ < {\rm{EDT}}{{\rm{A}}^{ - 4}} < {\rm{N}}{{\rm{H}}_3} < {\rm{en}} < {\rm{C}}{{\rm{N}}^ - } < {\rm{CO}}\\ {\rm{So, the \,correct\, option\, is\, (4)}}{\rm{. }} \end{array}\]
JEE Main - 2024
CHXII09:COORDINATION COMPOUNDS
321888
Which of the following cannot be explained by crystal field theory?
1 Magnetic properties of transition metal complexes
2 The order of spectrochemical series
3 Stability of metal complexes
4 Colour of metal complexes
Explanation:
Crystal field theory explains about the structure, magnetic properties and colour of metal complexes. It also explains the stability of metal complexes. Crystal field theory introduces spectrochemical series based upon the experimental values of \(\Delta\) but can't explain it's order.
