The coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively
1. 3 and +3
2. 3 and 0
3. 6 and +3
4. 4 and +2
A solution containing 2.675 g of CoCl3.6NH3 (molar mass = 267.5 g mol-1) is passed through a cation exchanger. The chloride ions obtained in the solution were treated with an excess of AgNO3 to give 4.78 g of AgCl. Formula of the complex is (Atomic mass of Ag = 108u) :
1. [CoCl(NH3)5]Cl2
2.
3. [CoCl2(NH3)4]Cl
4. [CoCl3(NH3)3]
The compound that will exhibit maximum ionic conductivity in aqueous solution is:
1. K4[Fe(CN)6]
2. [Co(NH3)6]Cl3
3. [Cu(NH3)4]Cl2
4. [Ni(CO)4]