Question

name the compound [Co(NH3)5(CO3)]Cl

Answer 1

Pentaamine carbonatocobalt (III) chloride

Answer 2

The IUPAC name of $[Co(NH_3)_5(CO_3)]Cl$ is pentacamminecarbonato cobalt (III) chloride.

Explanation:

1. The ligand is named first.
2. The charge of metal indicated with the Roman numerals and enclosed in the parenthesis after metal name.
3. The ligands are named in alphabetical order before the metal ion.
4. Ligands that include a numerical prefix in the name use the prefixes bis for 2, tris for 3, or tetrakis for 4 to indicate their number.

In the given coordination compound, Co is the cobalt metal, $CO_3$ and $NH_3$ are the ligands named as carbonato and ammine.

For oxidation no of Co

x +(0)5+(-2)1=+1

x = +3

IUPAC name of $[Co(NH_3)_5(CO_3)]Cl$ is pentacamminecarbonato cobalt (III) chloride.

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