In oxyhemocyanin, the coordiantion number, mode of oxygen binding, color and the net magnetic behavior of copper ions, respectively are:
(Given: atomic number of Cu is 29)
(a)Four, $\mu\text{-}\eta^{1}{:}\eta^{1}\text{-}\mathrm{O_2^{2-}}$, blue and diamagnetic.
(b)Five, $\mu\text{-}\eta^{2}{:}\eta^{2}\text{-}\mathrm{O_2^{-}}$, colorless and paramagnetic.
(c)Five, $\mu\text{-}\eta^{2}{:}\eta^{2}\text{-}\mathrm{O_2^{2-}}$, blue and diamagnetic.
(d)Four, $\mu\text{-}\eta^{1}{:}\eta^{1}\text{-}\mathrm{O_2^{-}}$, colorless and paramagnetic.
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Each Cu(II) has three His + two O of the μ-η²:η²-peroxide (five-coordinate); the site is blue and diamagnetic through strong antiferromagnetic coupling (c).