Vbt Cft Their Limitations

A pair that contains both the ions coloured in an aqueous solution is:

(At. no. : Sc = 21, Ti = 22, Ni = 28, Cu = 29, Co = 27)

1.		2.
3.		4.

[Cr(H₂O)₆]Cl₃ (At. No. of Cr = 24) has a magnetic moment of 3.83 BM.
​​​​The correct distribution of 3d electrons in the chromium of the complex is:

1. $3d_{x^2-y^2}^1,\hspace{0.17em}3d_{z^2}^1,\hspace{0.17em}3d_{xy}^1$

2. $3d_{xy}^1,\hspace{0.17em}3d_{x^2-y^2}^1,\hspace{0.17em}3d_{yz}^1$

3. $3d_{xy}^1,\hspace{0.17em}3d_{zy}^1,\hspace{0.17em}3d_{xz}^1$

4. $3d_{xy}^1,\hspace{0.17em}3d_{yz}^1,\hspace{0.17em}3d_{z^2}^1$

Crystal field stabilization energy for high spin d⁴ octahedral complex is:

1. -1.8 ${∆}_0$

2. -1.6 ${∆}_0$+P

3. -1.2 ${∆}_0$

4. -0.6 ${∆}_0$

The d-electron configurations of Cr²⁺, Mn²⁺, Fe²⁺ and Co²⁺ are d⁴, d⁵, d⁶, and d⁷ respectively. Minimum paramagnetic behavior is shown by:
(At. No C = 24, Mn = 25, Fe = 26, Co = 27)

1. [Fe(H₂O)₆]²⁺

2. [Co(H₂O)₆]²⁺

3. [Cr(H₂O)₆]²⁺

4. [Mn(H₂O)₆]²⁺

Of the following complex ions, which is diamagnetic in nature?

1. ${\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}$

2. ${\left[{\mathrm{CuCl}}_4\right]}^{2-}$

3. ${\left[{\mathrm{CoF}}_6\right]}^{3-}$

4. ${\left[{\mathrm{NiCl}}_4\right]}^{2-}$

Which one of the following is an outer orbital complex and exhibits paramagnetic behavior?

1. $\left[Ni\right(N{H}_3{)}_6{]}^{2+}$

2. $\left[Zn\right(N{H}_3{)}_6{]}^{2+}$

3. $\left[Cr\right(N{H}_3{)}_6{]}^{3+}$

4. $\left[Co\right(N{H}_3{)}_6{]}^{3+}$

The hybridization involved in the complex ${\left[\mathrm{Ni}{\left(\mathrm{CN}\right)}_4\right]}^{2-}$is:
(Atomic number of Ni=28)

1.	$ds{p}^2$	2.	$s{p}^3$
3.	$d^{2}s{p}^2$	4.	$d^{2}s{p}^3$

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

1. d⁷

2. d⁸

3. d⁴

4. d⁹

The correct increasing order for the wavelengths of absorption in complexes of Co³⁺ is:

1. [Co(H₂O)₆]³⁺ < [Co(en)₃]³⁺ < [Co(NH₃)₆]^{3 +}

2. [Co(H₂O)₆]³⁺ < [Co(NH₃)₆]³⁺ < [Co(en)₃]³⁺

3. [Co(NH₃)₆]³⁺ < [Co(en)₃]³⁺ < [Co(H₂O)₆]³⁺

4. [Co(en)₃]³⁺ < [Co(NH₃)₆]³⁺ < [Co(H₂O)₆]³⁺

The correct statement among the following regarding [Mn(CN)₆]^3-is:

1. It is sp³d² hybridized and tetrahedral.

2. It is d²sp³ hybridized and octahedral.

3. It is dsp² hybridised and square planar.

4. It is sp³d² hybridised and octahedral.

The geometry and magnetic behaviour of the complex [Ni(CO)₄] are:
1. Square planar geometry and Diamagnetic
2. Tetrahedral geometry and Diamagnetic
3. Square planar geometry and Paramagnetic
4. Tetrahedral geometry and Paramagnetic

What is the correct electronic configuration of the central atom in based on crystal field theory:

1.		2.
3.		4.

Match Column-I with Column-II, Columns I and II represent complexes and magnetic moment (BM) respectively.

	Column-I		Column-II
(a)	[FeCN6]3-	(i)	5.92 BM
(b)	[Fe(H2O)6]3+	(ii)	0 BM
(c)	[Fe(CN)6]4-	(iii)	4.90 BM
(d)	[Fe(H2O)6]2+	(iv)	1.73 BM

Choose the correct answer from the options given below:

	(a)	(b)	(c)	(d)
1.	(i)	(iii)	(iv)	(ii)
2.	(iv)	(i)	(ii)	(iii)
3.	(iv)	(ii)	(i)	(iii)
4.	(ii)	(iv)	(iii)	(i)

The order of energy absorbed, which is responsible for the color of complexes, is:

1.	B > A > C	2.	A > B > C
3.	C > B > A	4.	C > A > B

Given below are two statements :

Statement I :	Both and Complexes are octahedral but differ in their magnetic behaviour.
Statement II :	is diamagnetic whereas is paramagnetic.

In the light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are False.
2. Statement I is True and Statement II is False.
3. Statement I is False but Statement II is True.
4. Both Statement I and Statement II are True.

Which of the following are paramagnetic?

A.		B.
C.		D.
E.

Choose the correct answer from the options given below:

1.	A and D only	2.	A, D and E only
3.	A and C only	4.	B and E only

The correct order of the wavelength of light absorbed by the following complexes is.

A.		B.
C.		D.

Choose the correct answer from the options given below:

1.		2.
3.		4.