Is Cobalt Ii Stable?

(ii) Cobalt(II) is stable in aqueous solution but in the presence of complexing reagents it is easily oxidised.

Why Cobalt 2 is more stable?

(b) Cobalt (II) is stable in aqueous solution but in the presence of complexion agent, it undergoes change in oxidation state from +2 to +3 and is easily oxidised. This is because CO3+ has more tendency to form coordination complexes than Co2+.

Which is more stable Co2+ or CO3+?

We know Co3+ is more stable in complex compounds than Co2+ is in the same.

Is Cobalt 2 or cobalt 3 more stable?

Cobalt generally forms cobalt(II) and cobalt(III) compounds, but there are cobalt compounds, which have 4 +, 1 +, 0, 1− oxidation states [4]. It is more stable than those compounds which consist of cobalt-III ions.

Why is cobalt stable?

Co(II) is stable in aqueous solutions however, in the presence of strong field complexing is agents, it is oxidised to Co(III). Although the 3rd ionisation energy for Co is high, but the higher amount of crystal field stabilisation field ligands overcomes this ionisation energy.

Which is more stable Co or NO?

NO^+ is more stable than the NO , and CO^+ is less stable than CO .

Which is the most stable +2 oxidation state and why?

Due to the inert pair effect lead (Pb) has the most stable oxidation state. As we move down the group, the stability of lower oxidation state increases. Hence in Pb group, as we move down the stability of +2 state goes on becoming more than +4 state due to inert pair effect.

Is Co or co2 more stable?

CO has higher enthalpy, higher heat content, hence less stable. CO₂ has lower enthalpy, lower heat content, hence more stable.

Is co2+ high or low spin?

Octahedral, six-coordinate Co²⁺ can exist in two spin states. For biological ligands, H₂O and NH₃, the most stable spin state is high spin (S = ³/₂).

Which cobalt ion is more stable?

Cobalt (III)
Cobalt (III) is more stable in octahedral complexes.
2. Zinc forms coloured ions or complexes
3. Most of the d-block elements and their compounds are ferromagnetic.

Why is cobalt II stable in aqueous solution?

Co(II) is stable in aqueous solutions as water is weak field ligand. But in the presence of strong field ligands, it is oxidized to Co (III).

What is cobalt 2+ called?

Cobalt(2+) is a divalent metal cation, a cobalt cation and a monoatomic dication.

How do you know which ion is more stable?

The larger the atom, and the further the electrons from the nucleus, the more polarizable it is. The more polarizable the atom, the more stable the anion. Within a row of the periodic table, the more electronegative an atom, the more stable the anion.

Is cobalt stable or unstable?

stable
Cobalt-59 is naturally occurring and is stable. Cobalt-50 through 58 and 60 through 75 are artificially produced and are radioactive.

Is cobalt a stable element?

Natural cobalt is all stable isotope cobalt-59, from which the longest-lived artificial radioactive isotope cobalt-60 (5.3-year half-life) is produced by neutron irradiation in a nuclear reactor.

Is cobalt stable or reactive?

Like iron, it can be magnetized. It is similar to iron and nickel in its physical properties. The element is active chemically, forming many compounds. Cobalt is stable in air and unaffected by water, but is slowly attacked by dilute acids.

Which element is the most stable?

Iron
Iron is the most stable element in terms of structural stability and in terms of nuclear stability but not in terms of the chemical stability.

Which element is highest stable?

Hence, iron is the most stable element.

Which ligand is more stable?

Ligands having vacant p- or d-orbital tend to form π bond and hence form stable complexes with metals.

Which metal is most stable +2 oxidation state?

Pb
Pb has most stable +2 oxidation state due to inert pair effect.

Why is +2 more stable?

+2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number as 3d orbitals acquire only one electron in each of five 3d orbitals (remain half-filled) and the electronic repulsion is least and the nuclear charge increases.