What is the charge of a cobalt II ion?
2+ charge
This is cobalt. In this case, there is a 2+ charge on the atom, so it is a cation. We note from Table 3.6 “Monatomic Ions of Various Charges” that cobalt cations can have two possible charges, so the name of the ion must specify which charge the ion has. This is the cobalt(II) cation.
What is cobalt as an ion?
Cobalt is somewhat of a reactive element. The simplest ion that cobalt forms in solution is the pink hexaaquacobalt(II) ion – [Co(H2O)6]2+. Cobalt(II) chloride is often used in humidity indicators because in dry form it is blue and when hydrated it is pink.
Is Cobalt positive or negative?
And all of them form an anion with a single negative charge. The VIA elements gain two electrons to form anions with a 2- charge….Positive and Negative Ions: Cations and Anions.
| Family | Element | Ion Name |
|---|---|---|
| Cobalt | Cobalt(II) or cobaltous | |
| Cobalt(III) or cobaltic | ||
| IB | Copper | Copper(I) or cuprous |
| Copper(II) or cupric |
Is cobalt an atom or ion?
Cobalt is a chemical element – a substance that contains only one type of atom. Its official chemical symbol is Co and its atomic number is 27, which means that a cobalt atom has 27 protons in its nucleus.
Is Cobalt II phosphate?
Cobalt phosphate is the inorganic compound with the formula Co3(PO4)2. It is a commercial inorganic pigment known as cobalt violet….Cobalt(II) phosphate.
| Names | |
|---|---|
| Other names cobalt violet, cobalt(II) phosphate, cobalt orthophosphate, Pigment Violet 14 | |
| Identifiers | |
| CAS Number | 13455-36-2 (tetrahydrate: 10294-50-5) |
What is the main use of cobalt?
Cobalt is also used to make airbags in automobiles; catalysts for the petroleum and chemical industries; cemented carbides (also called hardmetals) and diamond tools; corrosion- and wear-resistant alloys; drying agents for paints, varnishes, and inks; dyes and pigments; ground coats for porcelain enamels; high-speed …
Is cobalt II a solid or aqueous?
Cobalt chloride can be prepared in aqueous solution from cobalt (II) hydroxide or cobalt (II) carbonate and hydrochloric acid : The solid dihydrate and hexahydrate can be obtained by evaporation. Cooling saturated aqueous solutions yields the dihydrate between 120.2 °C and 51.25 °C, and the hexahydrate below 51.25 °C.
What is the formula of cobalt II hypochlorite?
It contains cobalt in its +3 oxidation state. Its chemical formula is Co 2O 3. It can be made by reacting a cobalt(II) salt with sodium hypochlorite. This reaction also makes some chlorine. It is used as a catalyst.
What is the formula for cobalt II hydrogen carbonate?
The chemical formula for cobalt(II) hydrogen carbonate is #”Co”(“HCO”_3)_2#.
What is the formula for cobalt II silicate?
Cobalt(II) Silicate Name: Cobalt(II) Silicate Alias: Cobaltous Silicate Formula: CoSiO3 Molar Mass: 135.0169 Example Reactions: • CoCl2 + Na2SiO3 = CoSiO3 + 2NaCl :: Chemistry Applications:: Chemical Elements, Periodic Table