$A$ $Pt$ complex of $NH_3$ and $Cl$ that produces four ions per molecule in an aqueous solution is:

How many ions are produced from the complex $[Co(NH_3)_6]Cl_2$ in solution?
$i. 6 \quad ii. 4 \quad iii. 3 \quad iv. 2$

In the complex ion $[Fe(C_2O_4)_3]^{3-}$,the coordination number of $Fe$ is

Which of the following statements is incorrect for $EDTA$?

The coordination number and the oxidation state of the element $E$ in the complex $[E(en)_2(C_2O_4)]NO_2$ (where $en$ is ethylene diamine) are,respectively:

When $1 \ mol$ of the complex $Co(NH_3)_5Cl_3$ is dissolved in water,it yields $3 \ mol$ of ions. When $1 \ mol$ of the same complex reacts with $2 \ mol$ of $AgNO_3$,it produces $2 \ mol$ of $AgCl_{(s)}$. What is the structure of this complex?