Geometrical Isomerism in Octahedral Geometry

Q. Which of the following complex species is not expected to exhibit optical isomerism?

1. $\left[Co\right(en{)}_3{]}^{3+}$
2. $\left[Co\right(en{)}_{2}C{l}_2{]}^{+}$
3. $\left[Co\right(N{H}_3{)}_{3}C{l}_3]$
4. $\left[Co\right(en\left)\right(N{H}_3{)}_{2}C{l}_2{]}^{+}$

Q. The number of geometrical isomers of $\left[Co\right(N{H}_3{)}_3\left(N{O}_3{)}_3\right]$ are:

1. $4$
2. $2$
3. $3$
4. $0$

Q. Read the following questions and answer as per the directions given below:

Statement I: The geometrical isomers of the complex $\left[M\right(N{H}_3{)}_{4}C{l}_2]$ are optically inactive.
Statement II: Both geometical isomers of the complex $\left[M\right(N{H}_3{)}_{4}C{l}_2]$ possess axis of symmetry.
(IIT-JEE, 2008)

1. Statement I is true; Statement II is also true; Statement II is a correct explanation for Statement-I.
2. Statement I is true; Statement II is false.
3. Statement I is true; Statement II is true.
4. Statement I is true; Statement II is true; Statement II is not the correct explanation for Statement-I.

Q.

The number of geometric isomers possible for the complex $\left[Co{L}_{2}C{l}_2{]}^{-}\right(L=H_{2}NC{H}_{2}C{H}_2{O}^{-})$ ___

Q.

Number of possible isomers for the complex $\left[Co\right(en{)}_{2}C{l}_2]Cl$ will be (en = ethylenediamine)

1. 3

2. 4

3. 2

4. 1

Q. Among the complex ions, ${\left[Co\right(N{H}_2-C{H}_2-C{H}_2-N{H}_2{)}_{2}C{l}_2]}^{+},{\left[CrC{l}_2\right(C_2{O}_4{)}_2]}^{3-},{\left[Fe\right(H_{2}O{)}_4\left(OH{)}_2\right]}^{+},{\left[Fe\right(N{H}_3{)}_2\left(CN{)}_4\right]}^{-},{\left[Co\right(N{H}_2-C{H}_2-C{H}_2-N{H}_2{)}_2\left(N{H}_3\right)Cl]}^{2+}and{\left[Co\right(N{H}_3{)}_4\left(H_{2}O\right)Cl]}^{2+}$, the number of complex ions that show cis - trans isomeroism is:

Q. The number of geometric isomers possible for the complex $\left[Co{L}_{2}C{l}_2{]}^{-}\right(L=H_{2}NC{H}_{2}C{H}_2{O}^{-})$ is

Q. How many isomers are possible in $\left[Cr{\left(en\right)}_{2}B{r}_2\right]$?

Q. Total number of $cis-N-Mn-Cl$ bond angles (that is, Mn - N and Mn - Cl bonds in cis positions) present in a molecule of cis-$\left[Mn\right(en{)}_{2}C{l}_2]$ complex is $(en=N{H}_{2}C{H}_{2}C{H}_{2}N{H}_2)$

Q. The type of isomerism shown by the complex $\left[CoC{l}_2\right(en{)}_2]$ is

1. Coordination isomerism
2. Geometrical isomerism
3. Ionization isomerism
4. Linkage isomerism