Q41 · CSIR-NET Chemistry, December 2015

Paper: CSIR-NET December 2015 · Subject: Inorganic Chemistry · Chapter: Bioinorganic Chemistry · Topic: Bioinorganic Chemistry – General · Marks: 2 · Difficulty: Easy

Deoxy-hemocyanin is
(a)heme protein and paramagnetic
(b)colourless and diamagnetic
(c)$\mathrm{O}_{2}$ transporter and paramagnetic
(d)blue colored and diamagnetic
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
Deoxyhemocyanin contains two Cu(I) (d¹⁰) centres: colourless and diamagnetic; only on binding O₂ does it become blue (Cu(II)–peroxo).

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