Question

Select the correct IUPAC name for [(NH${}_3$)${}_4$Co(OH)(NH${}_2$)Co(NH${}_3$)${}_4$]${}^{4+}$.

• A. $\mu$-Amido-$\mu$-hydroxidobis (tetraammine cobalt (4+)) ion
• B. $\mu$-Amido-$\mu$-hydroxidobis (tetraarnmine cobalt (III)) ion
• C. $\mu$-t-Amido-$\mu$-hydroxidobis (tetraarnmine cobaltate (4+)) ion
• D. $\mu$-Amido-$\mu$-hydroxidobis (tetraarnmine cobaltate (III)) ion

Answer 1

The correct option is B $\mu$-Amido-$\mu$-hydroxidobis (tetraarnmine cobalt (III)) ion

"ate" suffix is used to denote that the compound has a net negative charge.

Hence, the IUPAC name of complex is

$\mu -Amido-\mu -hydroxidobis\left(tetrammineCobalt\right(III)ion$