Coordination Compounds MCQ

The compounds in which the central atom or group of atoms is surrounded by anions or neutral molecules called ligands are known as coordination compounds. In the coordination compounds, the central group acts as Lewis acid. The ligands are electron-pair donors and function as the Lewis base. The branch of chemistry under which properties of such compounds are studied is called the coordination chemistry. There is no sharp dividing line between the covalent, coordination and ionic compounds.

1. When 0.1 mol CoCl3(NH3)5 is combined with excess AgNO3, then 0.2 mol AgCl is obtained. The conductivity of the solution suits the

1. 1:3 electrolyte
2. 1:1 electrolyte
3. 3:1 electrolyte
4. 1:2 electrolyte

Answer: (d)

2. A chelating agent has two or more than two donor atoms to bind to a single metal ion. Which of the following is not a chelating agent?

1. Thiosulphato
2. Oxalato
3. Glycinato
4. Ethane-1,2-diamine

Answer: (a)

3. IUPAC name of [Pt(NH₃)₂Cl(NO₂)] is

1. Platinum diamminechloronitrite
2. Chloronitrito-N-ammineplatinum (II)
3. Diamminechloridonitrito-N-platinum (II)
4. Diamminechloronitrito-N-plantinate (II)

Answer: (c)

4. In the complex [E(en)2(C2O4)]NO2 (where (en) is ethylenediamine) _______are the coordination number and the oxidation state of the element ‘E’ respectively.

1. 6 and 2
2. 2 and 2
3. 4 and 3
4. 6 and 3

Answer: (d)

5. The sum of coordination number and oxidation number of the metal M in the complex [M(en)₂(C₂O₄)]Cl (where (en) is ethylenediamine) is

1. 9
2. 6
3. 7
4. 8

Answer: (a)

6. Some salts containing two different metallic elements give test for only one of them in solution, such salts are

1. double salts
2. normal salts
3. complex salts
4. None of these

Answer: (c)

7. An example of a sigma bonded organometallic compound is

1. Grignard reagent
2. Ferrocene
3. Cobaltocene
4. Ruthenocene

Answer: (a)

8. Iron carbonyl, Fe(CO)₅ is

1. Tetranuclear
2. Mononuclear
3. Dinuclear
4. Trinuclear

Answer: (b)

9. The type of isomerism shown by the complex [CoCl₂(en)₂] is

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

Answer: (a)

10. Which of the following elements do not form a complex with EDTA?

1. Ca
2. Mg
3. Be
4. Sr

Answer: (c)

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