What is the total number of ions in the aqueous solution of ferric hexacyanoferrate $(II)$?

When $AgNO_3$ solution is added in excess to $1 \ M$ solution of $CoCl_3 \cdot X \ NH_3$,one mole of $AgCl$ is formed. What is the value of '$X$'?

The denticity of the organic ligand,biuret,is:

The covalency of $Al$ in $[AlCl(H_2O)_5]^{2+}$ is:

Which of the following complexes is homoleptic?

The formula of alum is