321978
Out of the following two coordination entities which is/are chiral (optically active)? (1) cis- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (2) trans- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\)
1 Which is a & b?
2 Only b
3 Both a and b
4 Neither a nor b
Explanation:
The two entities are represented as
(a) \(\mathrm{Cis}_{-}-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (b)trans \(-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) Out of the two, (1) cis - \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) is chiral (optically active).
CHXII09:COORDINATION COMPOUNDS
321979
Which of the following compounds shows optical isomerism?
\({{\rm{[Cr(}}{{\rm{C}}_{\rm{2}}}{{\rm{O}}_{\rm{4}}}{{\rm{)}}_{\rm{3}}}{\rm{]}}^{{\rm{3 + }}}}\) shows optical isomerism because its mirror image is not supermposable.
CHXII09:COORDINATION COMPOUNDS
321980
Give the number of pair of enantiomer of \({\mathrm{\left[\mathrm{Ma}_{2} \mathrm{~b}_{2} \mathrm{~cd}\right]}}\).
1 4
2 2
3 1
4 3
Explanation:
Only cis-isomers are optically active. Their number \({\mathrm{=2}}\)
CHXII09:COORDINATION COMPOUNDS
321981
In which case racemic mixture is obtained on mixing its mirror images in 1:1 molar ratio?
(1) \(\left[\mathrm{Cr}(\text { en })_{3}\right]^{3+}\) exists in \({\text{d - and}}\,\,{\text{l - }}\) forms due to the absence of the symmetry element(s). So it will give racemic mixutre when \(d\) - and \(l\) - forms are mixed in 1:1 molar ratio. (2) \(\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right]\) has square planar geometry and thus has mirror plane so optically inactive. (3) \(c i s-\left[\mathrm{Cu}(\mathrm{gly})_{2}\right]\) has square planar geometry and thus have mirror plane so optically inactive.
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CHXII09:COORDINATION COMPOUNDS
321978
Out of the following two coordination entities which is/are chiral (optically active)? (1) cis- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (2) trans- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\)
1 Which is a & b?
2 Only b
3 Both a and b
4 Neither a nor b
Explanation:
The two entities are represented as
(a) \(\mathrm{Cis}_{-}-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (b)trans \(-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) Out of the two, (1) cis - \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) is chiral (optically active).
CHXII09:COORDINATION COMPOUNDS
321979
Which of the following compounds shows optical isomerism?
\({{\rm{[Cr(}}{{\rm{C}}_{\rm{2}}}{{\rm{O}}_{\rm{4}}}{{\rm{)}}_{\rm{3}}}{\rm{]}}^{{\rm{3 + }}}}\) shows optical isomerism because its mirror image is not supermposable.
CHXII09:COORDINATION COMPOUNDS
321980
Give the number of pair of enantiomer of \({\mathrm{\left[\mathrm{Ma}_{2} \mathrm{~b}_{2} \mathrm{~cd}\right]}}\).
1 4
2 2
3 1
4 3
Explanation:
Only cis-isomers are optically active. Their number \({\mathrm{=2}}\)
CHXII09:COORDINATION COMPOUNDS
321981
In which case racemic mixture is obtained on mixing its mirror images in 1:1 molar ratio?
(1) \(\left[\mathrm{Cr}(\text { en })_{3}\right]^{3+}\) exists in \({\text{d - and}}\,\,{\text{l - }}\) forms due to the absence of the symmetry element(s). So it will give racemic mixutre when \(d\) - and \(l\) - forms are mixed in 1:1 molar ratio. (2) \(\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right]\) has square planar geometry and thus has mirror plane so optically inactive. (3) \(c i s-\left[\mathrm{Cu}(\mathrm{gly})_{2}\right]\) has square planar geometry and thus have mirror plane so optically inactive.
321978
Out of the following two coordination entities which is/are chiral (optically active)? (1) cis- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (2) trans- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\)
1 Which is a & b?
2 Only b
3 Both a and b
4 Neither a nor b
Explanation:
The two entities are represented as
(a) \(\mathrm{Cis}_{-}-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (b)trans \(-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) Out of the two, (1) cis - \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) is chiral (optically active).
CHXII09:COORDINATION COMPOUNDS
321979
Which of the following compounds shows optical isomerism?
\({{\rm{[Cr(}}{{\rm{C}}_{\rm{2}}}{{\rm{O}}_{\rm{4}}}{{\rm{)}}_{\rm{3}}}{\rm{]}}^{{\rm{3 + }}}}\) shows optical isomerism because its mirror image is not supermposable.
CHXII09:COORDINATION COMPOUNDS
321980
Give the number of pair of enantiomer of \({\mathrm{\left[\mathrm{Ma}_{2} \mathrm{~b}_{2} \mathrm{~cd}\right]}}\).
1 4
2 2
3 1
4 3
Explanation:
Only cis-isomers are optically active. Their number \({\mathrm{=2}}\)
CHXII09:COORDINATION COMPOUNDS
321981
In which case racemic mixture is obtained on mixing its mirror images in 1:1 molar ratio?
(1) \(\left[\mathrm{Cr}(\text { en })_{3}\right]^{3+}\) exists in \({\text{d - and}}\,\,{\text{l - }}\) forms due to the absence of the symmetry element(s). So it will give racemic mixutre when \(d\) - and \(l\) - forms are mixed in 1:1 molar ratio. (2) \(\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right]\) has square planar geometry and thus has mirror plane so optically inactive. (3) \(c i s-\left[\mathrm{Cu}(\mathrm{gly})_{2}\right]\) has square planar geometry and thus have mirror plane so optically inactive.
321978
Out of the following two coordination entities which is/are chiral (optically active)? (1) cis- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (2) trans- \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\)
1 Which is a & b?
2 Only b
3 Both a and b
4 Neither a nor b
Explanation:
The two entities are represented as
(a) \(\mathrm{Cis}_{-}-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) (b)trans \(-\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) Out of the two, (1) cis - \(\left[\mathrm{CrCl}_{2}(\mathrm{ox})_{2}\right]^{3-}\) is chiral (optically active).
CHXII09:COORDINATION COMPOUNDS
321979
Which of the following compounds shows optical isomerism?
\({{\rm{[Cr(}}{{\rm{C}}_{\rm{2}}}{{\rm{O}}_{\rm{4}}}{{\rm{)}}_{\rm{3}}}{\rm{]}}^{{\rm{3 + }}}}\) shows optical isomerism because its mirror image is not supermposable.
CHXII09:COORDINATION COMPOUNDS
321980
Give the number of pair of enantiomer of \({\mathrm{\left[\mathrm{Ma}_{2} \mathrm{~b}_{2} \mathrm{~cd}\right]}}\).
1 4
2 2
3 1
4 3
Explanation:
Only cis-isomers are optically active. Their number \({\mathrm{=2}}\)
CHXII09:COORDINATION COMPOUNDS
321981
In which case racemic mixture is obtained on mixing its mirror images in 1:1 molar ratio?
(1) \(\left[\mathrm{Cr}(\text { en })_{3}\right]^{3+}\) exists in \({\text{d - and}}\,\,{\text{l - }}\) forms due to the absence of the symmetry element(s). So it will give racemic mixutre when \(d\) - and \(l\) - forms are mixed in 1:1 molar ratio. (2) \(\left[\mathrm{Ni}(\mathrm{dmg})_{2}\right]\) has square planar geometry and thus has mirror plane so optically inactive. (3) \(c i s-\left[\mathrm{Cu}(\mathrm{gly})_{2}\right]\) has square planar geometry and thus have mirror plane so optically inactive.
