Some salts,although containing two different metallic elements,give a test for only one of them in solution. Such salts are:

For the coordination compound $[Co(H_2O)_4SO_3]Cl$,the coordination number,oxidation state,number of $d$-electrons,and number of unpaired $d$-electrons of the metal ion are respectively:

According to the Lewis theory,a ligand is .......

Which of the following coordination complexes contains both anionic and neutral ligands?

Which of the following ligands can form a chelate?

The ratio of the number of cations,anions,and water molecules respectively in potash alum is: