d- and f-Block Elements

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below :

1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Match the LIST-I with LIST-II Choose the correct answer from the options given below :

1. A-I, B-III, C-IV, D-II
2. A-II, B-I, C-III, D-IV
3. A-IV, B-II, C-I, D-III
4. A-III, B-I, C-IV, D-II

Number of paramagnetic ions among the following d- and f-block metal ions is . Mn2+, Cu2+, Zn2+, Yb2+, Sc3+, La3+, Gd3+, Lu3+, Ti4+, Ce4+ (Atomic number of Mn = 25, Cu = 29, Zn = 30, Yb = 70, Sc = 21, La = 57, Gd = 64, Lu = 71, Ti = 22, Ce = 58)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below

1. Statement I is false but Statement II is true
2. Both Statement I and Statement II are false
3. Both Statement I and Statement II are true
4. Statement I is true but Statement II is false

The correct decreasing order of spin only magnetic moment values (BM) of Cu+, Cu2+, Cr2+ and Cr3+ ions is :

1. Cr3+ > Cr2+ > Cu+ > Cu2+
2. Cu+ > Cu2+ > Cr3+ > Cr2+
3. Cr2+ > Cr3+ > Cu2+ > Cu+
4. Cu2+ > Cu+ > Cr2+ > Cr3+

Pair of transition metal ions having the same number of unpaired electrons is

1. Ti3+, Mn2+
2. Ti2+, Co2+
3. Fe3+, Cr2+
4. V2+, Co2+

The metal ions that have the calculated spin-only magnetic moment value of 4.9 B.M. are : Choose the correct answer from the options given below:

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

The spin-only magnetic moment value of Mn+ ion formed among Ni, Zn, Mn and Cu that has the least enthalpy of atomisation is . (in nearest integer) Here n is equal to the number of diamagnetic complexes among K2[NiCl4], [Zn(H2O)6]Cl2, K3[Mn(CN)6] and [Cu(PPh3)3I]

Consider 'n' is the number of lone pair of electrons present in the equatorial position of the most stable structure of ClF3. The ions from the following with 'n' number of unpaired electrons are Choose the correct answer from the options given below:

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

The spin only magnetic moment ( ) value (B.M.) of the compound with the strongest oxidising power among Mn2O3, TiO and VO is B.M. (Nearest integer).

Match List - I with List - II. Choose the correct answer from the options given below :

1. (A)-(III), (B)-(I), (C)-(IV), (D)-(II)
2. (A)-(II), (B)-(IV), (C)-(I), (D)-(III)
3. (A)-(III), (B)-(I), (C)-(II), (D)-(IV)
4. (A)-(IV), (B)-(II), (C)-(III), (D)-(I)

The correct set of ions (aqueous solution) with same colour from the following is:

1. V2+, Cr3+, Mn3+
2. Ti4+, V4+, Mn2+
3. Sc3+, Ti3+, Cr2+
4. Zn2+, V3+, Fe3+

The 'spin only' magnetic moment value of MO42- is BM. (Where M is a metal having least metallic radii. among Sc, Ti, V, Cr, Mn and Zn). (Given atomic number: Sc = 21, Ti = 22, V = 23, Cr = 24, Mn = 25 and Zn = 30)

Among CrO, Cr2O3 and CrO3, the sum of spin-only magnetic moment values of basic and amphoteric oxides is 10-2 BM (nearest integer). (Given atomic number of Cr is 24 )

Among VO2+, MnO4- and Cr2O72-, the spin-only magnetic moment value of the species with least oxidising ability is BM (Nearest integer). (Given atomic number V = 23, Mn = 25, Cr = 24)

The spin-only magnetic moment value of the ion among Ti2+, V2+, Co3+ and Cr2+, that acts as strong oxidising agent in aqueous solution is BM (Near integer). (Given atomic numbers : Ti : 22, V : 23, Cr : 24, Co : 27)

A first row transition metal in its +2 oxidation state has a spin-only magnetic moment value of 3.86 BM. The atomic number of the metal is

1. 22
2. 23
3. 26
4. 25

Which of the following compounds show colour due to d-d transition?

1. K2Cr2O7
2. CuSO4 5H2O
3. KMnO4
4. K2CrO4

The orange colour of K2Cr2O7 and purple colour of KMnO4 is due to

1. Charge transfer transition in both.
2. d d transitions in KMnO4 and charge transfer transitions in K2Cr2O7.
3. d d transitions in both
4. d d transitions in K2Cr2O7 and charge transfer transitions in KMnO4.

Which of the following electronic configuration would be associated with the highest magnetic moment?

1. [Ar]3d7
2. [Ar]3d8
3. [Ar]3d3
4. [Ar]3d6