An example of a double salt is:

Metals have the tendency to lose electrons to form cations. When $Zn$ is added to $NaOH$,a complex is formed. In this complex,$Zn$ is present in:

Sodium thiosulphate is used to remove the unexposed $AgBr$ from photographic films by forming a complex. In this complex of silver,the coordination number of silver is

How many molecules of $EDTA$ (Ethylenediaminetetraacetic acid) are required to form an octahedral complex with a $Ca^{2+}$ ion?

Which molecule/ion among the following cannot act as a ligand in complex compounds?

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: