1.One unknown complex has a spin-only magnetic moment of 1.73 BM1.73\,\text{BM}1.73BM. As per crystal field theory, the complex is:a.d1d^1d1, octahedral field, with strong field ligandb.d9d^9d9, square planar field, with strong field ligandc.d9d^9d9, tetrahedral field, with weak field ligandd.All of theseLogin to continueOnly logged in users canattempt or see the solution.