The correct IUPAC name of the complex K[Cr(H2O)2(C2O4)2].3H2O is:
1. Potassiumdiaquadioxalatochromate(III)trihydrate
2. Diaquadioxalatopotassiumchromate (III) trihydrate
3. Potassiumdihydridodioxalatochromate(IV)trihydrate
4. Potassiumdiaquadioxalatochromate(II)trihydrate
Number of ions produced from the complex [Co(NH3)6]Cl2 in an aqueous solution are:
1. 6
2. 4
3. 3
4. 2
The compound with the highest magnetic moment value is:
1. \( {\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}} \)
2. \( {\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}} \)
3. \({\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}} \)
4. \( {\left[\mathrm{Ti}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}}\)
The oxidation number of Cobalt in K[Co(CO)4] is :
1. +1
2. +3
3. –1
4. –3
The most stable complex among the following is:
1. [Fe(H2O)6]3+
2. [Fe(NH3)6]3+
3. [Fe(C2O4)3]3–
4. [FeCl6]3–
The coordination number and oxidation number of Co in the complex (NH4)2[CoF4] are:
1. | +2, 4 | 2. | 4, +2 |
3. | 6, +3 | 4. | +3, 6 |
The oxidation number and coordination number of Co in the complex K3[Co(C2O4)3] respectively are:
1. | +3, 6
|
2. | +2, 6
|
3. | 6, +3
|
4. | +2, 4 |
The hybridisation of [FeF6]3- is:
1. | sp3d2 | 2. | d2sp3 |
3. | dsp3 | 4. | sp3 |
When an excess of aqueous KCN is added to an aqueous solution of copper sulphate, what coordination entity is formed?
1. | K2[Cu(CN)6] | 2. | K3[Cu(CN)4] |
3. | K2[Cu(CN)4] | 4. | K2[Cu(CN)3] |
Aqueous copper sulphate solution gives a green precipitate of A with aqueous potassium fluoride. What would be the correct molecular formula of A?
1. | [CuF6]3– | 2. | [CuF4]2– |
3. | [CuF2]– | 4. | [CuF5]4– |