Q. No.Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
1. [Ni(NH3)6]2+
2. [Zn(NH3)6]2+
3. [Cr(NH3)6]3+
4. [Co(NH3)6]3+
The d-electron configurations of Cr2+, Mn2+, Fe2+ and CO2+ are d4, d5, d6 and d7
respectively. Which one of the following will exhibit minimum paramagnetic behaviour?
(At. no. Cr = 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, the diamagnetic complex is:
1. [Ni(CN)4]2-
2. [CuCl4]2-
3. [CoF6]3-
4. [NiCl4]2-
The complexes [CO(NH3)6][Cr(CN)6] and [Cr(NH3)6][Co(CN)6] are examples of:
| 1. | lonisation isomerism | 2. | Coordination isomerism |
| 3. | Geometrical isomerism | 4. | Linkage isomerism |
The complex that does not exhibit optical isomerism is:
(en-ethylenediamine)
1. [Co(en)2Cl2]+
2. [Co(NH3)3Cl3]
3. [Co(en)Cl2(NH3)2]+
4. [Co(en)3]3+
Which of the following complex ions is expected to absorb visible light:
(At. no. Zn =30, Sc =21, Ti =22, Cr=24)
1. [Sc(H2O)3(NH3)3]3+
2. [Ti(en)2(NH3)2]4+
3. [Cr(NH3)6]3+
4. [Zn(NH3)6]2+
Which of the following complexes exhibits the highest paramagnetic behaviour?
where gly = glycine, en = ethylenediamine and bpy = bipyridyl moieties
(At no : Ti = 22, V = 23, Fe= 26, Co = 27)
(1) [V(gly)2 (OH)2(NH3)2]+
(2) [Fe(en)(bpy)NH3)2]2+
(3) [Co(OX)2(OH)2]-
(4) [Ti(NH3)6]3+
Which of the following will give a pair of enantiomorphs?
(1) [Co(NH3)4Cl2]NO2
(2) [Cr(NH3)6][Co(CN)6]
(3) [Co(en)2Cl2]CI
(4) [Pt(NH3)4][PtCl6 ]
(en =NH2CH2CH2NH2)
Copper sulphate dissolves in excess of KCN to give :
(1) CuCN
(2) [Cu(CN)4]3-
(3) [Cu(CN4]2-
(4) Cu(CN)2
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