Chemistry · PYQ NEET UG 2026

The complex which has facial and meridional isomers is (Given: py = pyridine and en = H_2N-CH_2-CH_2-NH_2)

1. [Cr(py)_3(Cl)_3]
2. [Cr(H_2O)_6]^{3+}
3. [Co(NH_3)_4(H_2O)_2]^{3+}
4. [Ni(en)_2(H_2O)_2]^{2+}