Crystal Field Theory
CHXII09:COORDINATION COMPOUNDS

321851 Match Column I with Column II
supporting img

1 \({\rm{A}} - {\rm{R,B}} - {\rm{P,C}} - {\rm{S,D}} - {\rm{Q}}\)
2 \({\rm{A}} - {\rm{S,B}} - {\rm{R,C}} - {\rm{P,D}} - {\rm{Q}}\)
3 \({\rm{A}} - {\rm{P,B}} - {\rm{R,C}} - {\rm{S,D}} - {\rm{Q}}\)
4 \({\rm{A}} - {\rm{R,B}} - {\rm{S,C}} - {\rm{Q,D}} - {\rm{P}}\)
CHXII09:COORDINATION COMPOUNDS

321852 Which of the following is false for tetrahedral complexes?

1 Low spin
2 High spin
3 \(d\)-d transition
4 Coloured
CHXII09:COORDINATION COMPOUNDS

321853 Which of the following statements are correct?
(I) In octahedral complexes,\({{\text{d}}_{{{\text{z}}^{\text{2}}}}}{\text{,}}{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals have higher energy than \({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{and}}\,{{\text{d}}_{{\text{zx}}}}\) orbitals.
(II) In tetrahedral complexes,\({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{,}}{{\text{d}}_{{\text{zx}}}}\) orbitals have higher energy than \({{\text{d}}_{{{\text{z}}^{\text{2}}}}}\,{\text{and}}\,\,{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals.
(III) The colours of complexes are due to electronic transitions from one set of \({\text{d}}\) orbitals to another set of \(\mathrm{d}\) - orbitals.
(Iv) \(\Delta_{\text {tetrahedral }}=\dfrac{9}{4} \Delta_{\text {octahedral }}\)

1 I, II and III
2 I and Iv
3 III and Iv
4 II, III and Iv
CHXII09:COORDINATION COMPOUNDS

321854 Low spin tetrahedral complexes not formed because

1 Crystal field stabilisation energy \(=\) Pairing energy
2 Crystal field stabilisation energy \(>\) Pairing energy
3 Crystal field stabilisation energy \( < \) Pairing energy
4 Ligands cannot force the electrons to pair up
CHXII09:COORDINATION COMPOUNDS

321851 Match Column I with Column II
supporting img

1 \({\rm{A}} - {\rm{R,B}} - {\rm{P,C}} - {\rm{S,D}} - {\rm{Q}}\)
2 \({\rm{A}} - {\rm{S,B}} - {\rm{R,C}} - {\rm{P,D}} - {\rm{Q}}\)
3 \({\rm{A}} - {\rm{P,B}} - {\rm{R,C}} - {\rm{S,D}} - {\rm{Q}}\)
4 \({\rm{A}} - {\rm{R,B}} - {\rm{S,C}} - {\rm{Q,D}} - {\rm{P}}\)
CHXII09:COORDINATION COMPOUNDS

321852 Which of the following is false for tetrahedral complexes?

1 Low spin
2 High spin
3 \(d\)-d transition
4 Coloured
CHXII09:COORDINATION COMPOUNDS

321853 Which of the following statements are correct?
(I) In octahedral complexes,\({{\text{d}}_{{{\text{z}}^{\text{2}}}}}{\text{,}}{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals have higher energy than \({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{and}}\,{{\text{d}}_{{\text{zx}}}}\) orbitals.
(II) In tetrahedral complexes,\({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{,}}{{\text{d}}_{{\text{zx}}}}\) orbitals have higher energy than \({{\text{d}}_{{{\text{z}}^{\text{2}}}}}\,{\text{and}}\,\,{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals.
(III) The colours of complexes are due to electronic transitions from one set of \({\text{d}}\) orbitals to another set of \(\mathrm{d}\) - orbitals.
(Iv) \(\Delta_{\text {tetrahedral }}=\dfrac{9}{4} \Delta_{\text {octahedral }}\)

1 I, II and III
2 I and Iv
3 III and Iv
4 II, III and Iv
CHXII09:COORDINATION COMPOUNDS

321854 Low spin tetrahedral complexes not formed because

1 Crystal field stabilisation energy \(=\) Pairing energy
2 Crystal field stabilisation energy \(>\) Pairing energy
3 Crystal field stabilisation energy \( < \) Pairing energy
4 Ligands cannot force the electrons to pair up
CHXII09:COORDINATION COMPOUNDS

321851 Match Column I with Column II
supporting img

1 \({\rm{A}} - {\rm{R,B}} - {\rm{P,C}} - {\rm{S,D}} - {\rm{Q}}\)
2 \({\rm{A}} - {\rm{S,B}} - {\rm{R,C}} - {\rm{P,D}} - {\rm{Q}}\)
3 \({\rm{A}} - {\rm{P,B}} - {\rm{R,C}} - {\rm{S,D}} - {\rm{Q}}\)
4 \({\rm{A}} - {\rm{R,B}} - {\rm{S,C}} - {\rm{Q,D}} - {\rm{P}}\)
CHXII09:COORDINATION COMPOUNDS

321852 Which of the following is false for tetrahedral complexes?

1 Low spin
2 High spin
3 \(d\)-d transition
4 Coloured
CHXII09:COORDINATION COMPOUNDS

321853 Which of the following statements are correct?
(I) In octahedral complexes,\({{\text{d}}_{{{\text{z}}^{\text{2}}}}}{\text{,}}{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals have higher energy than \({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{and}}\,{{\text{d}}_{{\text{zx}}}}\) orbitals.
(II) In tetrahedral complexes,\({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{,}}{{\text{d}}_{{\text{zx}}}}\) orbitals have higher energy than \({{\text{d}}_{{{\text{z}}^{\text{2}}}}}\,{\text{and}}\,\,{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals.
(III) The colours of complexes are due to electronic transitions from one set of \({\text{d}}\) orbitals to another set of \(\mathrm{d}\) - orbitals.
(Iv) \(\Delta_{\text {tetrahedral }}=\dfrac{9}{4} \Delta_{\text {octahedral }}\)

1 I, II and III
2 I and Iv
3 III and Iv
4 II, III and Iv
CHXII09:COORDINATION COMPOUNDS

321854 Low spin tetrahedral complexes not formed because

1 Crystal field stabilisation energy \(=\) Pairing energy
2 Crystal field stabilisation energy \(>\) Pairing energy
3 Crystal field stabilisation energy \( < \) Pairing energy
4 Ligands cannot force the electrons to pair up
CHXII09:COORDINATION COMPOUNDS

321851 Match Column I with Column II
supporting img

1 \({\rm{A}} - {\rm{R,B}} - {\rm{P,C}} - {\rm{S,D}} - {\rm{Q}}\)
2 \({\rm{A}} - {\rm{S,B}} - {\rm{R,C}} - {\rm{P,D}} - {\rm{Q}}\)
3 \({\rm{A}} - {\rm{P,B}} - {\rm{R,C}} - {\rm{S,D}} - {\rm{Q}}\)
4 \({\rm{A}} - {\rm{R,B}} - {\rm{S,C}} - {\rm{Q,D}} - {\rm{P}}\)
CHXII09:COORDINATION COMPOUNDS

321852 Which of the following is false for tetrahedral complexes?

1 Low spin
2 High spin
3 \(d\)-d transition
4 Coloured
CHXII09:COORDINATION COMPOUNDS

321853 Which of the following statements are correct?
(I) In octahedral complexes,\({{\text{d}}_{{{\text{z}}^{\text{2}}}}}{\text{,}}{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals have higher energy than \({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{and}}\,{{\text{d}}_{{\text{zx}}}}\) orbitals.
(II) In tetrahedral complexes,\({{\text{d}}_{{\text{xy}}}}{\text{,}}{{\text{d}}_{{\text{yz}}}}{\text{,}}{{\text{d}}_{{\text{zx}}}}\) orbitals have higher energy than \({{\text{d}}_{{{\text{z}}^{\text{2}}}}}\,{\text{and}}\,\,{{\text{d}}_{{{\text{x}}^{\text{2}}}{\text{ - }}{{\text{y}}^{\text{2}}}}}\) orbitals.
(III) The colours of complexes are due to electronic transitions from one set of \({\text{d}}\) orbitals to another set of \(\mathrm{d}\) - orbitals.
(Iv) \(\Delta_{\text {tetrahedral }}=\dfrac{9}{4} \Delta_{\text {octahedral }}\)

1 I, II and III
2 I and Iv
3 III and Iv
4 II, III and Iv
CHXII09:COORDINATION COMPOUNDS

321854 Low spin tetrahedral complexes not formed because

1 Crystal field stabilisation energy \(=\) Pairing energy
2 Crystal field stabilisation energy \(>\) Pairing energy
3 Crystal field stabilisation energy \( < \) Pairing energy
4 Ligands cannot force the electrons to pair up