The anion of acetylacetone $(acac)$ forms $Co(acac)_3$ chelate with $Co^{3+}.$ The rings of the chelate are

The molecular formula of tris(ethylenediamine)cobalt$(III)$ sulfate is:

The coordination number and the oxidation state of the element $M$ in the complex $[M(en)_{2}(C_{2}O_{4})]NO_{2}$ [where $en$ is ethane-$1,2$-diamine] are respectively:

Which of the following complexes gives only $25\%$ mole of $AgCl$ precipitate when reacted with excess $AgNO_3$?

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

Given below are two statements :
Statement $I :$ The identification of $Ni^{2+}$ is carried out by dimethyl glyoxime in the presence of $NH_{4}OH$.
Statement $II :$ The dimethyl glyoxime is a bidentate neutral ligand.
In the light of the above statements,choose the correct answer from the options given below: