Can cobalt have +6 oxidation state?

No oxidation states are found above +6 for Rh and Ir, or above +5 for Co. Indeed, examples of cobalt in +4 and +5 and of rhodium or iridium in +5 and +6 oxidation states are rare and sometimes poorly characterized.

What is Cobalts oxidation number?

+2
cobalt

atomic number	27
boiling point	2,870 °C (5,198 °F)
density	8.9 gram/cm3 at 20 °C (68 °F)
oxidation states	+2, +3
electron configuration	[Ar]3d74s2

What is oxidation state of cobalt in Co NH3 6?

As the molecule $N{H_3}$ contributes the zero electrons in the total oxidation state its net contribution will be zero. The ${\text{ + 3}}$ is the charge which is present on the complex. Therefore, the oxidation state of the cobalt is ${\text{ + 3}}$.

Does cobalt oxidize?

It is readily oxidized with water and oxygen to brown cobalt(III) hydroxide (Co(OH)3). At temperatures of 600–700 °C, CoO oxidizes to the blue cobalt(II,III) oxide (Co3O4), which has a spinel structure.

Can cobalt have oxidation state +5?

Percobaltates are chemical compounds where the oxidation state of cobalt is +5.

What is the oxidation number of cobalt in cobalt II phosphate?

The oxidation number of cobalt in tricobalt diphosphate octahydrate is 2.

What is the oxidation number of NH3 6?

So, the charge on the complex ion should be +3 i.e. [Co(NH3)6]^+3 so that it can neutralise the anions and form an overall neutral complex. Here, NH3 is a neutral ligand having 0 charge. So, the charge of Co is the net charge of the complex ion. Thus Co is at its +3 oxidation state itself.

Is cobalt a neutral ligand?

Coordination compounds are complex or contain complex ions, for example: Complex Cation: [Co(NH3)6]3+ Complex Anion: [CoCl4(NH3)2]− Neutral Complex: [CoCl3(NH3)3]…Rule 2: Neutral Ligands.

Molecular Formula of Ligand	Ligand Name
CO	Carbonyl
NO	Nitrosyl
CH3NH2	Methylamine
C5H5N	Pyridine