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acid complexes were determined. The dissociation constants of the amino acids determined are; alanine (10.29), arginine (12.02), asparagine (9.39), glycine (9.87), histidine (7.01), lysine (9.28), methionine (9.68), phenylalanine (9.61), proline (10.53), threonine (10.31), tryptophan (9.77), and valine (10.28). The ratio of metal to amino acid determined for the complexes is 1:3, except for Cu (II) and Zn (II), which is 1:2. The Stepwise Stability Constants of the complexes were determined are found to decrease in the order K1 > K2 > K3 for all the complexes. The value of overall stability constant (β) of each complex obtained is relatively high, indicating good stability for the complexes.