CFSE in Octahedral and Tetrahedral Complexes

Q. The crystal field splitting energy for octahedral and tetrahedral complexes is related as

1. ${\Delta }_t$ ≈ $\frac{4}{9}$${\Delta }_o$
2. ${\Delta }_o$≈ $\frac{4}{9}$${\Delta }_t$
3. ${\Delta }_t$ ≈ $\frac{1}{2}$${\Delta }_o$
4. ${\Delta }_o$ ≈ 2${\Delta }_t$

Q. In a high spin octahedral complex, the $d^7$ configuration according to CFT is

1. $t_{2g}^6,e^{1}g$
2. $t_{2g}^4,e^{3}g$
3. $t_{2g}^3,e^{4}g$
4. $t_{2g}^5,e^{2}g$

Q.

Jahn-Teller effect is not observed in high spin complexes of

1. $d^7$

2. $d^8$

3. $d^4$

4. $d^9$

Q.

Which of the pair of complex compounds are tetrahedral as well as diamagnetic?

1. $\left[CoC{l}_4{]}^{-}and\right[Co(CO{)}_4{]}^{-}$

2. $\left[Ag\right(SCN{)}_4{]}^{2-}and[NiC{l}_4{]}^{2-}$

3. $\left[Co\right(CO{)}_4{]}^{-}and\left[Ni\right(CN{)}_4{]}^{4-}$

4. $\left[PdC{l}_4{]}^{2-}and\right[Ni(CN{)}_4{]}^{2-}$

Q. Increasing order of ${\Delta }_o$ of the following complex is:

1. $\left[Cr\right(N{H}_3{)}_6{]}^{3+}<\left[Cr\right(H_{2}O{)}_6{]}^{3+}<\left[Cr\right(N{O}_2{)}_6{]}^{3-}$
2. $\left[Cr\right(H_{2}O{)}_6{]}^{3+}>\left[Cr\right(N{H}_3{)}_6{]}^{3+}>\left[Cr\right(N{O}_2{)}_6{]}^{3-}$
3. $\left[Cr\right(H_{2}O{)}_6{]}^{3+}<\left[Cr\right(N{H}_3{)}_6{]}^{3+}<\left[Cr\right(N{O}_2{)}_6{]}^{3-}$
4. $\left[Cr\right(N{H}_3{)}_6{]}^{3+}<\left[Cr\right(N{O}_2{)}_6{]}^{3-}<\left[Cr\right(H_{2}O{)}_6{]}^{3+}$

Q.

Match the column:
$\begin{array}{cccc}& & & \\ & Column-I& & Column-II\\ \left(a\right)& \left[Ag\right(N{H}_3{)}_2{]}^{+}& \left(p\right)& Octahedral\\ \left(b\right)& \left[Cu\right(N{H}_3{)}_4{]}^{2+}& \left(q\right)& Tetrahedral\\ \left(c\right)& \left[Cr\right(H_{2}O{)}_6{]}^{2+}& \left(r\right)& Trigonalbipyramidal\\ \left(d\right)& \left[Fe\right(CO{)}_5]& \left(s\right)& Squareplanar\\ & & \left(t\right)& Linear\end{array}$

1. (a) → t; (b) → s; (c) → r; (d) → p.

2. (a) → t; (b) → q; (c) → r; (d) → s.

3. (a) → t; (b) → q ; (c) → s; (d) → r.

4. (a) → t; (b) → s; (c) → p; (d) → r.