Crystal Field Theory
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CHXII09:COORDINATION COMPOUNDS

321876 Which among the following cations forms a least stable complex if the ligand is same?

1 \(\mathrm{Fe}^{2+}\)
2 \(\mathrm{Ni}^{2+}\)
3 \(\mathrm{Cd}^{2+}\)
4 \(\mathrm{Co}^{2+}\)
MHTCET - 2022
CHXII09:COORDINATION COMPOUNDS

321877 The complex \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) absorbs energy corresponding to ' \(x\) ' \(\mathrm{nm}\). Which wavelength in \(\mathrm{nm}\) is \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) (tetrahedral) likely to be absorbed?

1 \(3.75 \mathrm{x}\)
2 \(\dfrac{4}{9} \mathrm{x}\)
3 \(\dfrac{9}{4} \mathrm{x}\)
4 \(3 \mathrm{x}\)
CHXII09:COORDINATION COMPOUNDS

321878 Which electronic distribution has maximum number of unpaired electrons?

1 \({\rm{t}}_{2{\rm{g}}}^0,{\rm{e}}_{\rm{g}}^0\)
2 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^0\)
3 \({\rm{t}}_{2{\rm{g}}}^4,{\rm{e}}_{\rm{g}}^0\)
4 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^1\)
CHXII09:COORDINATION COMPOUNDS

321879 Match Column I with Column II
supporting img

Choose the correct answer from the options given below:

1 A - S, B - P, C - R, D - Q
2 A - Q , B - S, C - R, D - P
3 A - Q , B - S, C - P, D - R
4 A - S, B - P, C - Q , D - R
JEE - 2023
CHXII09:COORDINATION COMPOUNDS

321880 Identify the correct trend given below:
(Atomic No.: \(\mathrm{Ti}=22, \mathrm{Cr}=24\) and \(\mathrm{Mo}=42\) )

1 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{0}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
2 \(\Delta_{\mathrm{o}}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
3 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
4 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{\mathrm{o}} \text { of }\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
JEE - 2016
NEET DIGITAL LIBRARY
CHXII09:COORDINATION COMPOUNDS

321876 Which among the following cations forms a least stable complex if the ligand is same?

1 \(\mathrm{Fe}^{2+}\)
2 \(\mathrm{Ni}^{2+}\)
3 \(\mathrm{Cd}^{2+}\)
4 \(\mathrm{Co}^{2+}\)
MHTCET - 2022
CHXII09:COORDINATION COMPOUNDS

321877 The complex \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) absorbs energy corresponding to ' \(x\) ' \(\mathrm{nm}\). Which wavelength in \(\mathrm{nm}\) is \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) (tetrahedral) likely to be absorbed?

1 \(3.75 \mathrm{x}\)
2 \(\dfrac{4}{9} \mathrm{x}\)
3 \(\dfrac{9}{4} \mathrm{x}\)
4 \(3 \mathrm{x}\)
CHXII09:COORDINATION COMPOUNDS

321878 Which electronic distribution has maximum number of unpaired electrons?

1 \({\rm{t}}_{2{\rm{g}}}^0,{\rm{e}}_{\rm{g}}^0\)
2 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^0\)
3 \({\rm{t}}_{2{\rm{g}}}^4,{\rm{e}}_{\rm{g}}^0\)
4 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^1\)
CHXII09:COORDINATION COMPOUNDS

321879 Match Column I with Column II
supporting img

Choose the correct answer from the options given below:

1 A - S, B - P, C - R, D - Q
2 A - Q , B - S, C - R, D - P
3 A - Q , B - S, C - P, D - R
4 A - S, B - P, C - Q , D - R
JEE - 2023
CHXII09:COORDINATION COMPOUNDS

321880 Identify the correct trend given below:
(Atomic No.: \(\mathrm{Ti}=22, \mathrm{Cr}=24\) and \(\mathrm{Mo}=42\) )

1 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{0}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
2 \(\Delta_{\mathrm{o}}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
3 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
4 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{\mathrm{o}} \text { of }\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
JEE - 2016
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CHXII09:COORDINATION COMPOUNDS

321876 Which among the following cations forms a least stable complex if the ligand is same?

1 \(\mathrm{Fe}^{2+}\)
2 \(\mathrm{Ni}^{2+}\)
3 \(\mathrm{Cd}^{2+}\)
4 \(\mathrm{Co}^{2+}\)
MHTCET - 2022
CHXII09:COORDINATION COMPOUNDS

321877 The complex \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) absorbs energy corresponding to ' \(x\) ' \(\mathrm{nm}\). Which wavelength in \(\mathrm{nm}\) is \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) (tetrahedral) likely to be absorbed?

1 \(3.75 \mathrm{x}\)
2 \(\dfrac{4}{9} \mathrm{x}\)
3 \(\dfrac{9}{4} \mathrm{x}\)
4 \(3 \mathrm{x}\)
CHXII09:COORDINATION COMPOUNDS

321878 Which electronic distribution has maximum number of unpaired electrons?

1 \({\rm{t}}_{2{\rm{g}}}^0,{\rm{e}}_{\rm{g}}^0\)
2 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^0\)
3 \({\rm{t}}_{2{\rm{g}}}^4,{\rm{e}}_{\rm{g}}^0\)
4 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^1\)
CHXII09:COORDINATION COMPOUNDS

321879 Match Column I with Column II
supporting img

Choose the correct answer from the options given below:

1 A - S, B - P, C - R, D - Q
2 A - Q , B - S, C - R, D - P
3 A - Q , B - S, C - P, D - R
4 A - S, B - P, C - Q , D - R
JEE - 2023
CHXII09:COORDINATION COMPOUNDS

321880 Identify the correct trend given below:
(Atomic No.: \(\mathrm{Ti}=22, \mathrm{Cr}=24\) and \(\mathrm{Mo}=42\) )

1 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{0}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
2 \(\Delta_{\mathrm{o}}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
3 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
4 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{\mathrm{o}} \text { of }\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
JEE - 2016
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CHXII09:COORDINATION COMPOUNDS

321876 Which among the following cations forms a least stable complex if the ligand is same?

1 \(\mathrm{Fe}^{2+}\)
2 \(\mathrm{Ni}^{2+}\)
3 \(\mathrm{Cd}^{2+}\)
4 \(\mathrm{Co}^{2+}\)
MHTCET - 2022
CHXII09:COORDINATION COMPOUNDS

321877 The complex \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) absorbs energy corresponding to ' \(x\) ' \(\mathrm{nm}\). Which wavelength in \(\mathrm{nm}\) is \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) (tetrahedral) likely to be absorbed?

1 \(3.75 \mathrm{x}\)
2 \(\dfrac{4}{9} \mathrm{x}\)
3 \(\dfrac{9}{4} \mathrm{x}\)
4 \(3 \mathrm{x}\)
CHXII09:COORDINATION COMPOUNDS

321878 Which electronic distribution has maximum number of unpaired electrons?

1 \({\rm{t}}_{2{\rm{g}}}^0,{\rm{e}}_{\rm{g}}^0\)
2 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^0\)
3 \({\rm{t}}_{2{\rm{g}}}^4,{\rm{e}}_{\rm{g}}^0\)
4 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^1\)
CHXII09:COORDINATION COMPOUNDS

321879 Match Column I with Column II
supporting img

Choose the correct answer from the options given below:

1 A - S, B - P, C - R, D - Q
2 A - Q , B - S, C - R, D - P
3 A - Q , B - S, C - P, D - R
4 A - S, B - P, C - Q , D - R
JEE - 2023
CHXII09:COORDINATION COMPOUNDS

321880 Identify the correct trend given below:
(Atomic No.: \(\mathrm{Ti}=22, \mathrm{Cr}=24\) and \(\mathrm{Mo}=42\) )

1 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{0}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
2 \(\Delta_{\mathrm{o}}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
3 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
4 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{\mathrm{o}} \text { of }\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
JEE - 2016
NEET DIGITAL LIBRARY
CHXII09:COORDINATION COMPOUNDS

321876 Which among the following cations forms a least stable complex if the ligand is same?

1 \(\mathrm{Fe}^{2+}\)
2 \(\mathrm{Ni}^{2+}\)
3 \(\mathrm{Cd}^{2+}\)
4 \(\mathrm{Co}^{2+}\)
MHTCET - 2022
CHXII09:COORDINATION COMPOUNDS

321877 The complex \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}\) absorbs energy corresponding to ' \(x\) ' \(\mathrm{nm}\). Which wavelength in \(\mathrm{nm}\) is \(\left[\mathrm{M}\left(\mathrm{NH}_{3}\right)_{4}\right]^{2+}\) (tetrahedral) likely to be absorbed?

1 \(3.75 \mathrm{x}\)
2 \(\dfrac{4}{9} \mathrm{x}\)
3 \(\dfrac{9}{4} \mathrm{x}\)
4 \(3 \mathrm{x}\)
CHXII09:COORDINATION COMPOUNDS

321878 Which electronic distribution has maximum number of unpaired electrons?

1 \({\rm{t}}_{2{\rm{g}}}^0,{\rm{e}}_{\rm{g}}^0\)
2 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^0\)
3 \({\rm{t}}_{2{\rm{g}}}^4,{\rm{e}}_{\rm{g}}^0\)
4 \({\rm{t}}_{2{\rm{g}}}^3,{\rm{e}}_{\rm{g}}^1\)
CHXII09:COORDINATION COMPOUNDS

321879 Match Column I with Column II
supporting img

Choose the correct answer from the options given below:

1 A - S, B - P, C - R, D - Q
2 A - Q , B - S, C - R, D - P
3 A - Q , B - S, C - P, D - R
4 A - S, B - P, C - Q , D - R
JEE - 2023
CHXII09:COORDINATION COMPOUNDS

321880 Identify the correct trend given below:
(Atomic No.: \(\mathrm{Ti}=22, \mathrm{Cr}=24\) and \(\mathrm{Mo}=42\) )

1 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{0}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
2 \(\Delta_{\mathrm{o}}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
3 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}>\left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{o}\) of \(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+} < \left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
4 \(\Delta_{o}\) of \(\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+} < \left[\mathrm{Mo}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\) and
\(\Delta_{\mathrm{o}} \text { of }\left[\operatorname{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}>\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
JEE - 2016