Assertion (A): [Cr(H_2O)_6]Cl_2 and [Fe(H_2O)_6]Cl_2 are examples of homoleptic complexes.
Reason (R): All the ligands attached to the metal are the same.
Assertion (A) is false, but Reason (R) is true.
Step 1: Understanding homoleptic complexes. Homoleptic complexes feature identical ligands coordinated to the central metal atom. For instance, both \([Cr(H_2O)_6]Cl_2\) and \([Fe(H_2O)_6]Cl_2\) are classified as homoleptic complexes because only water molecules serve as ligands in each.
Step 2: Conclusion. Assertion (A) is accurate, and Reason (R) provides a correct explanation for it. Therefore, option (A) is the correct choice.